reference a case study

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How to Cite a Case Study in APA, MLA, or Chicago

When citing a case study, the format in MLA and APA is similar to that of a report, and in Chicago style, it is similar to that of a book. For all three citation styles, you will need the name of the author(s), the title of the case study, the year it was published, the publishing organization/publisher, and URL (if applicable). The templates and examples below will demonstrate how to cite a case study in MLA, APA, and Chicago styles.

Author Last Name, Author First Name.  Title of Case Study . Edition (if applicable), volume number (if applicable), Publisher, year of publication, URL without http:// or https:// (if applicable).

Hill, Linda A., et al. HCL Technologies (A). Rev. edition, Harvard Business School, 2008, www.hbs.edu/faculty/Pages/item.aspx?num=34784.

In-text Citation:

(Author Last Name(s) page #)

(Hill et al. 8)

Author Last Name, Author Initial. (Publication Year). Title of Case Study (Case # if applicable). Publishing Organization. URL

Hill, L., Khanna, T., & Stecker, E. (2008). HCL Technologies (A) (Case 408-004). Harvard Business School. https://www.hbs.edu/faculty/Pages/item.aspx?num=34784

(Author Last Name, Publication Year)

(Hill et al., 2008)

Notes-bibliography style

Author Last Name, First Name.  Title of the Case Study . Publishing City: Publishing Organization, Publication Year. URL.

Hill, Linda A., Tarun Khanna, and Emily Stecker. HCL Technologies (A).  Boston: Harvard Business School, 2008. https://www.hbs.edu/faculty/Pages/item.aspx?num=34784.

1. Author First Name Last Name, Title of the Case Study (Publishing City: Publishing Organization, Publication Year), URL.

1. Linda A. Hill, Tarun Khanna, and Emily Stecker, HCL Technologies (A) ( Boston: Harvard Business School, 2008), https://www.hbs.edu/faculty/Pages/item.aspx?num=34784.

Author-date style

Author Last Name, First Name. Publication Year. Title of the Case Study . Publishing City: Publishing Organization. URL.

Hill, Linda A., Tarun Khanna, and Emily Stecker. 2008. HCL Technologies (A).  Boston: Harvard Business School. https://www.hbs.edu/faculty/Pages/item.aspx?num=34784.

In-text citation: 

(Author Last Name Publication Date)

(Holl, Khanna, and Stecker 2008)

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Harvard Style Guide: Case studies

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Reference : Author/editor Last name, Initials. (Year) 'Title of case study' [Case Study], Journal Title, Volume (Issue), pp. page numbers. Available at: URL [Accessed Day Month Year].

Ofek, E., Avery, J., Rudolph, S., Martins Gomes, V., Saadat, N., Tsui, A., & Shroff, Y. (2014) 'Case study second thoughts about a strategy shift' [Case Study], Harvard Business Review , 92(12), pp. 125-129. Available at: http://search.ebscohost.com/login.aspx?direct=true&db=bth&AN=99621003&site=ehost-live [Accessed 10 December 2014].

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• In their case study Ofek et al. (2014) describe how marketing to the young generation...

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How to Cite a Case Study

Last Updated: March 6, 2024

This article was reviewed by Gerald Posner and by wikiHow staff writer, Jennifer Mueller, JD . Gerald Posner is an Author & Journalist based in Miami, Florida. With over 35 years of experience, he specializes in investigative journalism, nonfiction books, and editorials. He holds a law degree from UC College of the Law, San Francisco, and a BA in Political Science from the University of California-Berkeley. He’s the author of thirteen books, including several New York Times bestsellers, the winner of the Florida Book Award for General Nonfiction, and has been a finalist for the Pulitzer Prize in History. He was also shortlisted for the Best Business Book of 2020 by the Society for Advancing Business Editing and Writing. This article has been viewed 37,748 times.

Particularly in research for business studies or papers in the social sciences, you may want to cite a case study completed by a university or other organization. While case studies have titles and publication information like other articles, they often have a unique case study number that is typically included in your citation. While Chicago citation style is most frequently used in business schools, you may also use the American Psychological Association (APA) or Modern Language Association (MLA) style.

Sample Citations

• Example: Lee, Stan.
• If there is more than one author, list the additional authors' names in first-middle initial-last format. Separate author's names with commas, with the word "and" before the last author's name.

• Example: Lee, Stan. "DC Comics in 2016." HBS No. 999-111.

• Example: Lee, Stan. "DC Comics in 2016." HBS No. 999-111. Boston: Harvard Business School Publishing, 2017.

• Example: Lee, Stan. "DC Comics in 2016." HBS No. 999-111. Boston: Harvard Business School Publishing, 2017. http://hbsp.harvard.edu, accessed July 2018.

• Print example: Stan Lee, "DC Comics in 2016," HBS No. 999-111 (Boston, Harvard Business School Publishing, 2017), p. 14.
• Online example: Stan Lee, "DC Comics in 2016," HBS No. 999-111 (Boston, Harvard Business School Publishing, 2017), http://hbsp.harvard.edu, accessed July 2018.

• Example: Lee, S.
• Separate the names of multiple authors with commas, placing an ampersand before the last author's name.

• Example: Lee, S. (2017).
• If there is no year of publication listed, use the abbreviation "n.d." in the parentheses.

• Example: Lee, S. (2017). DC Comics in 2016 .

• Example: Lee, S. (2017). DC Comics in 2016 . HBS No. 999-111.

• Example: Lee, S. (2017). DC Comics in 2016 . HBS No. 999-111. Boston, MA: Harvard Business School Publishing.

• Example: (Lee, 2017).

• If there are 2 authors, place the word "and" between their names. For 3 or more, use commas with the word "and" before the final author. After the first author, list subsequent authors with their first name followed by their last name. For example: Lee, Stan and Clark Kent.

• Example: Lee, Stan. DC Comics in 2016. Case Study.

• Example: Lee, Stan. DC Comics in 2016. Case Study. Boston. Harvard Business School Publishing, 2017.
• Note that unlike many other citation styles, the unique case study number is not necessarily included for MLA citations. Ask your instructor or supervisor if they want this information included in your citation.

• Print example: Lee, Stan. DC Comics in 2016. Case Study. Boston. Harvard Business School Publishing, 2017. Print.
• Web example: Lee, Stan. DC Comics in 2016. Case Study. Boston. Harvard Business School Publishing, 2017. Web. 17 July 2018.
• If you accessed the case study online, you may put the URL of the case study. However, this isn't required by MLA style. Ask your instructor or supervisor for their preference.

• Example: (Lee 27).

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• ↑ https://guides.library.ualberta.ca/apa-citation-style/case-studies
• ↑ http://libanswers.snhu.edu/faq/128490
• ↑ http://libanswers.walsh.edu/faq/147917
• ↑ http://maag.guides.ysu.edu/businesscitations/mla

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Citing a case study

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Published February 4, 2021. Updated August 9, 2021.

To create a reference or citation for a case study, you will need to know basic information including the name of the author, title of the case study, journal or book title, and publication year.

The templates and examples below will show you how to cite a case study in MLA style, APA style, Chicago style, and Harvard referencing style.

Easily cite a case study in the style of your choice using the  Chegg Writing citation generator .

Help protect your paper against accidental plagiarism with the Chegg Writing  plagiarism checker  and  citation generator .

Citing a case study in MLA style

In-text citation template and example:

(Author Surname Page number)

(Rapp and Caramazza 373)

Works cited entry template and example:

Surname, First M. “Title of the Case Study.”  Name of Publication , Volume number, Issue number, Publication Day Month Year, Page number. Case study.

Rapp, Brenda, and Alfonso Caramazza. “Selective Difficulties with Spoken Nouns and Written Verbs: A Single Case Study.”  Journal of Neurolinguistics , vol. 15, no. 3, 2002, pp. 373–402. Case Study.

Citing a case study in APA style

(Author Surname, Year)

(Rapp & Caramazza, 2002)

Reference list entry template and example:

Surname, F. M. (Publication Year). Title of the case study [Case study].  Name of Publication , Volume(Issue), Page number.

Rapp, B., & Caramazza, A. (2002). Selective difficulties with spoken nouns and written verbs: A single case study [Case study].  Journal of Neurolinguistics,  15(3), 373–402.

Citing a case study in Chicago style, notes-bibliography

Footnote template and example:

Author Full Name, “Title of the Case Study,”

Name of Publication

Volume number, Issue number (Publication Month Day, Year): Page number.

Brenda Rapp and Alfonso Caramazza, “Selective Difficulties with Spoken Nouns and Written Verbs: A Single Case Study,”

Journal of Neurolinguistics

15, no. 3 (2002): 373.

Shortened Note

Author Surname, “Shortened Title of the Case Study,” Page number.

Rapp and Caramazza, “Selective Difficulties,” 402.

Bibliography entry template and example:

Author Surname, First M. “Title of the Case Study.”  Name of Publication  Volume number, Issue number (Publication Month Day, Year): Page number.

Rapp, Brenda, and Alfonso Caramazza. “Selective Difficulties with Spoken Nouns and Written Verbs: A Single Case Study.”  Journal of Neurolinguistics  15, no. 3 (2002): 373–402.

Citing a case study in Chicago style, author-date

(Author Surname Publication year)

(Rapp and Caramazza 2002)

Author Surname, First M. Publication year. “Title of the Case Study.”  Name of Publication  Volume number, Issue number: Page number.

Rapp, Brenda, and Alfonso Caramazza. 2002. “Selective Difficulties with Spoken Nouns and Written Verbs: A Single Case Study.”  Journal of Neurolinguistics  15, no. 3: 373–402.

How to cite a case study in Harvard referencing style

(Author Surname, Publication Year)

(Rapp and Caramazza, 2002)

Author Surname, F.M. (Publication Year) ‘Title of case study’,  Name of Journal , Volume(Issue), pp. #-#.

Rapp, B. and Caramazza, A. (2002) ‘Selective difficulties with spoken nouns and written verbs: A single case study’,  Journal of Neurolinguistics , 15(3-5), pp. 373–402.

Writing a paper ? Don’t forget to include a  bibliography .

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• Case studies

General format

There is no specific way to reference a case study in APA style. Case studies are typically published as an article or report, or within a book. Format the reference list entry according to the type of publication. Following are some examples of case studies in business.

Business case study

Author(s). (Year).   Title of case study . Number of case study. URL

Harvard business school case study

Dey, A. (2022). Corporate governance: A three pillar framework. HBS No. 491-009.  https://hbsp.harvard.edu/cases/

Ivey business school case study

Dunbar, C., & Southam, C. (2005). London youth symphony. Ivey ID: 9B05009.  http://iveycases.com

Style notes

• If the case study is not numbered, leave it out of the reference entry.
• If the source is a book, format the reference according to the rules for books.
• If the source is a journal, format the reference according to the rules for journal articles.
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How to Cite a Case Study in APA: A Comprehensive Guide

If you’re writing an academic paper, you may need to cite a case study. But how do you do that? This guide will explain everything you need to know about citing a case study in APA format.

Table of Contents

What is APA?

APA stands for American Psychological Association. It is a style guide used by many academic disciplines, including psychology, sociology, and business. The purpose of the APA style is to provide a consistent format for academic writing, making it easier for readers to understand and follow the author’s argument.

Why is it important to cite a case study?

Citing a case study is important for several reasons. First, it gives credit to the original author for their work. Second, it allows readers to find the source if they want to learn more. Finally, it adds credibility to your work by demonstrating that you have researched and referenced other relevant studies.

How to cite a case study in APA format

Here are the steps you need to follow to cite a case study in APA format:

Step 1: Start with the author’s last name and first initial.

The first step in citing a case study is to list the author’s last name and first initial. For example Smith, J.

Step 2: Include the year of publication in parentheses.

Next, you need to include the year of publication in parentheses. For example: (2018).

Step 3: Provide the title of the case study in italics.

After the year of publication, you need to provide the title of the case study in italics. For example The impact of social media on adolescent mental health.

Step 4: Add the name of the publisher.

The next step is to add the name of the publisher. For example Harvard Business Review Press.

Step 5: Include the DOI or URL.

Finally, you need to include the DOI or URL where the case study can be found. For example https://doi.org/10.1145/1234567.1234567

Here’s what the final citation should look like:

Smith, J. (2018). The impact of social media on adolescent mental health. Harvard Business Review Press. https://doi.org/10.1145/1234567.1234567

What to do if there is no DOI or URL

If you cannot find a DOI or URL for the case study, you can omit it from the citation. In that case, you should include the name of the database where you found the case study instead. For example:

Smith, J. (2018). The impact of social media on adolescent mental health. Harvard Business Review Press. Academic Search Complete.

Tips for citing a case study in APA format

• Always check the specific requirements of your instructor or publisher to ensure that you are following their guidelines correctly.
• Double-check your citations to make sure that you have included all the necessary information.
• If you are citing multiple case studies from the same author or publisher, you can use a shortened version of the citation after the first one. For example Smith (2018, p. 25).

Citing a case study in APA format may seem daunting at first, but it is quite simple once you know the steps. By following the guidelines in this article, you can ensure that your citations are accurate and complete and that you are giving credit to the original authors for their work.

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How to Cite a Case Study: Different Styles

November 20, 2023

Properly citing case studies plays a crucial role in academic writing for several reasons. Firstly, citing case studies demonstrates the credibility and reliability of your arguments and research. By referencing the original sources, you show that you have conducted thorough research and have used reputable and authoritative information to support your claims.

Secondly, citing case studies allows readers to further explore the topic and verify the information provided. It enables them to locate and read the full case study if they wish to delve deeper into the details and findings. This promotes transparency and fosters a more comprehensive understanding of the subject matter.

Finally, citing case studies acknowledges the contributions of the original authors and researchers. By giving proper credit, you adhere to ethical standards of academic integrity and avoid plagiarism. It also ensures that the individuals responsible for the case study receive recognition for their work.

In summary, citing case studies is essential in academic writing to enhance credibility, facilitate further exploration, and acknowledge the original authors’ contributions.

Basic Guidelines for Citing a Case Study

When citing a case study in your essay, it is important to follow some basic guidelines to ensure accuracy and consistency. Here are the key guidelines to keep in mind:

• Identify the case study: Start by providing the full title of the case study, along with the names of the authors or researchers involved. Include any relevant publication information, such as the name of the journal or book in which the case study is published.
• Format the citation style: Depending on the citation style required by your academic institution or professor, format your case study citation accordingly. Common citation styles include APA, MLA, Chicago, and Harvard. Each style has specific rules for formatting and referencing case studies, so familiarize yourself with the requirements of the chosen style.
• Include the case study publication date: In addition to the authors’ names and title, mention the date on which the case study was published. This provides important chronological context for your readers and allows them to assess the relevance and currency of the information presented.
• Provide a direct link or source: Whenever possible, include a direct link or source to the case study. This could be a URL to an online version of the case study, a DOI (Digital Object Identifier), or the volume and page numbers if it is published in a journal or book. This helps readers locate the case study easily and access it for further reading.

By adhering to these basic guidelines, you can ensure that your case study citations are accurate, consistent, and accessible for your readers. Remember to consult the specific guidelines of your chosen citation style to ensure complete adherence.

Citing a Case Study in APA Format

When citing a case study in APA format, follow these guidelines to accurately reference the source:

• Author(s) of the case study: Include the last name(s) and initials of the author(s) of the case study. If there are multiple authors, separate their names with commas and use an ampersand (&) before the last author’s name.
• Year of publication: Provide the year the case study was published in parentheses.
• Title of the case study: Use sentence case capitalization for the title. Only capitalize the first word and proper nouns.
• Source information: Depending on the source type, include additional details following the title. For example:
• If it is a journal article, include the journal name in italics, volume number(issue number), and page range.
• If it is a book chapter, include the book title in italics and the editors’ names.
• If it is an online source, provide the URL and the date of access.

Example APA citation for a case study:

• Single author: Author, A. (Year). Title of case study. Source information.
• Multiple authors: Author, A., & Author, B. (Year). Title of case study. Source information.

Make sure to properly format the citation, including hanging indents, use of italics, and punctuation. Additionally, list all the case studies you cited in a separate references page at the end of your essay, following APA formatting guidelines.

Citing a Case Study in MLA Format

When citing a case study in MLA format, follow these guidelines to reference the source accurately:

• Authors of the case study: Include the author’s name(s) in the order they appear in the source, but inverted (last name, first name).
• Title of the case study: Use sentence case capitalization. Capitalize the first word, proper nouns, and any other words that would normally be capitalized. Italicize the title.
• Title of the source: Use italics to indicate the title of the source. This could be the name of the journal, book, or website.
• Publication information: Depending on the source type, include additional details following the source title. For example:
• If it is a journal article, include the name of the journal in italics, volume number (issue number), and page range.
• If it is a book chapter, include the book title in italics, the editors’ names, publisher, year of publication, and page range.
• If it is an online source, provide the name of the website in italics, the date of publication, the name of the publisher, the URL, and the date of access.

Example MLA citation for a case study:

• Single author: Author last name, First name. “Title of case study.” Title of source, Publication information.
• Multiple authors: Last name, First name and First name Last name. “Title of case study.” Title of source, Publication information.

Remember to properly format the citation, including hanging indents, use of italics, and punctuation. Additionally, list all the case studies you cited in a separate works cited page at the end of your essay, following MLA formatting guidelines.

Citing a Case Study in Chicago Style

When citing a case study in Chicago style, follow these guidelines to reference the source accurately:

• Title of the case study: Use sentence case capitalization. Capitalize the first word, proper nouns, and any other words that would normally be capitalized. Enclose the title in double quotation marks.

Example Chicago citation for a case study:

• Single author: Author last name, first name. “Title of case study.” In Title of source, publication information.
• Multiple authors: Last name, first name, and first name last name. “Title of case study.” In Title of source, publication information.

Remember to properly format the citation, including hanging indents and punctuation. Additionally, list all the case studies you cited in a separate bibliography page at the end of your essay, following Chicago formatting guidelines.

Citing a Case Study in Harvard Style

When citing a case study in Harvard style, follow these guidelines to accurately reference the source:

• Authors of the case study: Include the last name(s) and initials of the author(s) of the case study. Separate multiple authors’ names with commas and use an ampersand (&) before the last author’s name.
• Title of the case study: Use sentence case capitalization for the title. Capitalize the first word, proper nouns, and any other words that would normally be capitalized. Italicize the title.

Example Harvard citation for a case study:

Ensure the citation is properly formatted, including punctuation, use of italics, and indentation. Also, list all the case studies cited in a separate references list at the end of the essay, following Harvard formatting guidelines.

Online Databases for Finding Case Studies

Finding case studies for your essay is made easier with the availability of online databases. These databases compile various case studies from different disciplines, allowing you to access a wide range of relevant examples. Here are some online databases you can use to find case studies:

• Google Scholar : This widely-used search engine provides access to scholarly articles, including case studies. Use specific keywords to narrow down your search and include the phrase “cite a case study” to find articles that specifically discuss how to cite case studies.
• EBSCOhost : EBSCOhost is a popular online research platform that offers access to multiple databases such as Academic Search Complete, Business Source Complete, and Psychology and Behavioral Sciences Collection. These databases contain numerous case studies across various fields.
• JSTOR : JSTOR is a digital library that provides access to academic journals, books, and primary sources. It covers diverse disciplines and includes a vast collection of case studies that can be useful for your research.
• ProQuest : ProQuest is another comprehensive research tool that offers access to a wide range of databases, including scholarly journals, newspapers, and dissertations. It houses a substantial collection of case studies covering multiple subject areas.

When searching in these databases, use keywords specific to your topic, such as the name of the industry or concept you are focusing on. Additionally, if you find a relevant case study, make sure to cite it correctly using the appropriate citation style.

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How to Cite Case Studies in APA Format

As a student researcher, you know the value of both quantitative and qualitative research to your chosen area of study. Case studies are forms of qualitative, descriptive research used often in fields such as psychology or business, fields in which the American Psychological Association (APA) style is used most often for writing these papers. APA style doesn't provide instructions for how to style a case study specifically, so you generally cite one according to the type of publication you found it in.

Case Studies from a Book

Many textbooks or books about a given subject include a series of case studies you can use as a source in your own work. The basic APA format for books includes the author’s name, year of publication, book title and the publisher’s name and location. Since you probably want to refer only to the specific case study in the book, you also include the study’s title to direct your audience straight to the source, as in the example :

Lecourt, E. (1991). Off-beat music therapy. In K. Bruscia (Ed.), Case studies in music therapy (pp.73-98). New York: Barcelona Publishers.

This book had an editor, so it was included before the book title. It also has the page numbers in parentheses after the title to lead the reader to the exact place you sourced the material.

Journal Article Citations

You might also find a variety of case studies in journals dedicated to your given field of study. These citations look similar to the format for books, but with some differences. The most notable difference is the addition of volume and page numbers, which is, again, of great value to your readers. A sample citation of a case study found in a journal looks like this:

Schwartz, M. F., Marin, O. S. M., & Saffran, E. M. (2004). Dissociations of language function in dementia: A case study. Brain and Language , 7 (3), 277-306.

In this example, the italicized volume number is followed, with no spaces between, the issue number, which is not italicized, in parentheses. Also notice the journal title follows traditional capitalization, where the first letter of all important words are capitalized. While you might not find many case studies in them, newspaper and magazine articles use the year, month day format for the date in parentheses.

Citations for Web Sources

You might find case studies online. If the study is an online version of a journal article, you could reference the original print source, or you could add the URL of the website. The rest of the citation would look like one for a journal article, with the addition “Retrieved from” followed by the URL. If your source is from an online journal with a digital object identifier, or DOI, you should use that number in place of the URL, as in this example :

Jacobsen, K. H., et al. (2015). Ebola in Freetown area, Sierra Leone: A case study of 581 patients. The New England Journal of Medicine , 372 , 587-588. doi: 10.1056/NEJMc1413685

DOIs provide long-lasting links to articles, whereas URLs can change frequently. DOIs are most often found on the first page of the case study, usually near the article title and the online journal’s title and volume number.

Business School Case Studies

APA style is also sometimes used in business, and case studies from Harvard or Ivey Business school have a slightly different citation format. As you will see in this example , the format is similar to that for a book:

Elberse, A. & Ferguson, A. (2013). Ferguson’s Formula . HBS No. R1310G-PDF-ENG. Boston, MA: Harvard Business School Publishing.

The citation for an Ivey Business School case study is the same, except you will write “Ivey ID” without quotation marks in place of “HBS No.”, and the location and publisher is “London, Canada: Ivey Publishing.”

In-Text Citations

Reference list entries are only part of citing case studies in your work. You also need to provide in-text citations; APA style uses the author-date format, as follows: (Lecourt, 1991). There is a comma between the author and the date. These citations go at the end of the sentence or sentences referring to the case study material, and the sentence's period goes after the final parentheses. If you mention the author’s name in your sentence, you need put only the date in parentheses directly after the author’s name.

Need help with a citation? Try our citation generator .

• Colorado State University: Case Studies
• Purdue Online Writing Lab: Reference List; Books
• Northern Alberta Institute of Technology: APA Style Guidelines & Examples
• Purdue Online Writing Lab: Reference List; Articles in Periodicals
• Purdue Online Writing Lab: Reference List; Electronic Sources
• Purdue Online Writing Lab: In-Text Citations

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Reference List: Common Reference List Examples

Article (with doi).

Alvarez, E., & Tippins, S. (2019). Socialization agents that Puerto Rican college students use to make financial decisions. Journal of Social Change , 11 (1), 75–85. https://doi.org/10.5590/JOSC.2019.11.1.07

Laplante, J. P., & Nolin, C. (2014). Consultas and socially responsible investing in Guatemala: A case study examining Maya perspectives on the Indigenous right to free, prior, and informed consent. Society & Natural Resources , 27 , 231–248. https://doi.org/10.1080/08941920.2013.861554

Use the DOI number for the source whenever one is available. DOI stands for "digital object identifier," a number specific to the article that can help others locate the source. In APA 7, format the DOI as a web address. Active hyperlinks for DOIs and URLs should be used for documents meant for screen reading. Present these hyperlinks in blue and underlined text (the default formatting in Microsoft Word), although plain black text is also acceptable. Be consistent in your formatting choice for DOIs and URLs throughout your reference list. Also see our Quick Answer FAQ, "Can I use the DOI format provided by library databases?"

Jerrentrup, A., Mueller, T., Glowalla, U., Herder, M., Henrichs, N., Neubauer, A., & Schaefer, J. R. (2018). Teaching medicine with the help of “Dr. House.” PLoS ONE , 13 (3), Article e0193972. https://doi.org/10.1371/journal.pone.0193972

For journal articles that are assigned article numbers rather than page ranges, include the article number in place of the page range.

For more on citing electronic resources, see  Electronic Sources References .

Article (Without DOI)

Found in a common academic research database or in print.

Casler , T. (2020). Improving the graduate nursing experience through support on a social media platform. MEDSURG Nursing , 29 (2), 83–87.

If an article does not have a DOI and you retrieved it from a common academic research database through the university library, there is no need to include any additional electronic retrieval information. The reference list entry looks like the entry for a print copy of the article. (This format differs from APA 6 guidelines that recommended including the URL of a journal's homepage when the DOI was not available.) Note that APA 7 has additional guidance on reference list entries for articles found only in specific databases or archives such as Cochrane Database of Systematic Reviews, UpToDate, ProQuest Dissertations and Theses Global, and university archives. See APA 7, Section 9.30 for more information.

Found on an Open Access Website

Eaton, T. V., & Akers, M. D. (2007). Whistleblowing and good governance. CPA Journal , 77 (6), 66–71. http://archives.cpajournal.com/2007/607/essentials/p58.htm

Provide the direct web address/URL to a journal article found on the open web, often on an open access journal's website. In APA 7, active hyperlinks for DOIs and URLs should be used for documents meant for screen reading. Present these hyperlinks in blue and underlined text (the default formatting in Microsoft Word), although plain black text is also acceptable. Be consistent in your formatting choice for DOIs and URLs throughout your reference list.

Weinstein, J. A. (2010).  Social change  (3rd ed.). Rowman & Littlefield.

If the book has an edition number, include it in parentheses after the title of the book. If the book does not list any edition information, do not include an edition number. The edition number is not italicized.

American Nurses Association. (2015). Nursing: Scope and standards of practice (3rd ed.).

If the author and publisher are the same, only include the author in its regular place and omit the publisher.

Lencioni, P. (2012). The advantage: Why organizational health trumps everything else in business . Jossey-Bass. https://amzn.to/343XPSJ

As a change from APA 6 to APA 7, it is no longer necessary to include the ebook format in the title. However, if you listened to an audiobook and the content differs from the text version (e.g., abridged content) or your discussion highlights elements of the audiobook (e.g., narrator's performance), then note that it is an audiobook in the title element in brackets. For ebooks and online audiobooks, also include the DOI number (if available) or nondatabase URL but leave out the electronic retrieval element if the ebook was found in a common academic research database, as with journal articles. APA 7 allows for the shortening of long DOIs and URLs, as shown in this example. See APA 7, Section 9.36 for more information.

Chapter in an Edited Book

Poe, M. (2017). Reframing race in teaching writing across the curriculum. In F. Condon & V. A. Young (Eds.), Performing antiracist pedagogy in rhetoric, writing, and communication (pp. 87–105). University Press of Colorado.

Include the page numbers of the chapter in parentheses after the book title.

Christensen, L. (2001). For my people: Celebrating community through poetry. In B. Bigelow, B. Harvey, S. Karp, & L. Miller (Eds.), Rethinking our classrooms: Teaching for equity and justice (Vol. 2, pp. 16–17). Rethinking Schools.

Also include the volume number or edition number in the parenthetical information after the book title when relevant.

Freud, S. (1961). The ego and the id. In J. Strachey (Ed.),  The standard edition of the complete psychological works of Sigmund Freud  (Vol. 19, pp. 3-66). Hogarth Press. (Original work published 1923)

When a text has been republished as part of an anthology collection, after the author’s name include the date of the version that was read. At the end of the entry, place the date of the original publication inside parenthesis along with the note “original work published.” For in-text citations of republished work, use both dates in the parenthetical citation, original date first with a slash separating the years, as in this example: Freud (1923/1961). For more information on reprinted or republished works, see APA 7, Sections 9.40-9.41.

Classroom Resources

Citing classroom resources.

If you need to cite content found in your online classroom, use the author (if there is one listed), the year of publication (if available), the title of the document, and the main URL of Walden classrooms. For example, you are citing study notes titled "Health Effects of Exposure to Forest Fires," but you do not know the author's name, your reference entry will look like this:

Health effects of exposure to forest fires [Lecture notes]. (2005). Walden University Canvas. https://waldenu.instructure.com

If you do know the author of the document, your reference will look like this:

Smith, A. (2005). Health effects of exposure to forest fires [PowerPoint slides]. Walden University Canvas. https://waldenu.instructure.com  

A few notes on citing course materials:

• [Lecture notes]
• [Course handout]
• [Study notes]
• It can be difficult to determine authorship of classroom documents. If an author is listed on the document, use that. If the resource is clearly a product of Walden (such as the course-based videos), use Walden University as the author. If you are unsure or if no author is indicated, place the title in the author spot, as above.
• If you cannot determine a date of publication, you can use n.d. (for "no date") in place of the year.

Note:  The web location for Walden course materials is not directly retrievable without a password, and therefore, following APA guidelines, use the main URL for the class sites: https://class.waldenu.edu.

Citing Tempo Classroom Resources

Clear author: 

Smith, A. (2005). Health effects of exposure to forest fires [PowerPoint slides]. Walden University Brightspace. https://mytempo.waldenu.edu

Unclear author:

Health effects of exposure to forest fires [Lecture notes]. (2005). Walden University Brightspace. https://mytempo.waldenu.edu

Conference Sessions and Presentations

Feinman, Y. (2018, July 27). Alternative to proctoring in introductory statistics community college courses [Poster presentation]. Walden University Research Symposium, Minneapolis, MN, United States. https://scholarworks.waldenu.edu/symposium2018/23/

Torgerson, K., Parrill, J., & Haas, A. (2019, April 5-9). Tutoring strategies for online students [Conference session]. The Higher Learning Commission Annual Conference, Chicago, IL, United States. http://onlinewritingcenters.org/scholarship/torgerson-parrill-haas-2019/

Dictionary Entry

Merriam-Webster. (n.d.). Leadership. In Merriam-Webster.com dictionary . Retrieved May 28, 2020, from https://www.merriam-webster.com/dictionary/leadership

When constructing a reference for an entry in a dictionary or other reference work that has no byline (i.e., no named individual authors), use the name of the group—the institution, company, or organization—as author (e.g., Merriam Webster, American Psychological Association, etc.). The name of the entry goes in the title position, followed by "In" and the italicized name of the reference work (e.g., Merriam-Webster.com dictionary , APA dictionary of psychology ). In this instance, APA 7 recommends including a retrieval date as well for this online source since the contents of the page change over time. End the reference entry with the specific URL for the defined word.

Discussion Board Post

Osborne, C. S. (2010, June 29). Re: Environmental responsibility [Discussion post]. Walden University Canvas.  https://waldenu.instructure.com  

Dissertations or Theses

Retrieved From a Database

Nalumango, K. (2019). Perceptions about the asylum-seeking process in the United States after 9/11 (Publication No. 13879844) [Doctoral dissertation, Walden University]. ProQuest Dissertations and Theses.

Retrieved From an Institutional or Personal Website

Evener. J. (2018). Organizational learning in libraries at for-profit colleges and universities [Doctoral dissertation, Walden University]. ScholarWorks. https://scholarworks.waldenu.edu/cgi/viewcontent.cgi?article=6606&context=dissertations

Unpublished Dissertation or Thesis

Kirwan, J. G. (2005). An experimental study of the effects of small-group, face-to-face facilitated dialogues on the development of self-actualization levels: A movement towards fully functional persons [Unpublished doctoral dissertation]. Saybrook Graduate School and Research Center.

For further examples and information, see APA 7, Section 10.6.

Legal Material

For legal references, APA follows the recommendations of The Bluebook: A Uniform System of Citation , so if you have any questions beyond the examples provided in APA, seek out that resource as well.

Court Decisions

Reference format:

Name v. Name, Volume Reporter Page (Court Date). URL

Sample reference entry:

Brown v. Board of Education, 347 U.S. 483 (1954). https://www.oyez.org/cases/1940-1955/347us483

Sample citation:

In Brown v. Board of Education (1954), the Supreme Court ruled racial segregation in schools unconstitutional.

Note: Italicize the case name when it appears in the text of your paper.

Name of Act, Title Source § Section Number (Year). URL

Sample reference entry for a federal statute:

Individuals With Disabilities Education Act, 20 U.S.C. § 1400 et seq. (2004). https://www.congress.gov/108/plaws/publ446/PLAW-108publ446.pdf

Sample reference entry for a state statute:

Minnesota Nurse Practice Act, Minn. Stat. §§ 148.171 et seq. (2019). https://www.revisor.mn.gov/statutes/cite/148.171

Sample citation: Minnesota nurses must maintain current registration in order to practice (Minnesota Nurse Practice Act, 2010).

Note: The § symbol stands for "section." Use §§ for sections (plural). To find this symbol in Microsoft Word, go to "Insert" and click on Symbol." Look in the Latin 1-Supplement subset. Note: U.S.C. stands for "United States Code." Note: The Latin abbreviation " et seq. " means "and what follows" and is used when the act includes the cited section and ones that follow. Note: List the chapter first followed by the section or range of sections.

Unenacted Bills and Resolutions

(Those that did not pass and become law)

Title [if there is one], bill or resolution number, xxx Cong. (year). URL

Sample reference entry for Senate bill:

Anti-Phishing Act, S. 472, 109th Cong. (2005). https://www.congress.gov/bill/109th-congress/senate-bill/472

Sample reference entry for House of Representatives resolution:

Anti-Phishing Act, H.R. 1099, 109th Cong. (2005). https://www.congress.gov/bill/109th-congress/house-bill/1099

The Anti-Phishing Act (2005) proposed up to 5 years prison time for people running Internet scams.

These are the three legal areas you may be most apt to cite in your scholarly work. For more examples and explanation, see APA 7, Chapter 11.

Magazine Article

Clay, R. (2008, June). Science vs. ideology: Psychologists fight back about the misuse of research. Monitor on Psychology , 39 (6). https://www.apa.org/monitor/2008/06/ideology

Note that for citations, include only the year: Clay (2008). For magazine articles retrieved from a common academic research database, leave out the URL. For magazine articles from an online news website that is not an online version of a print magazine, follow the format for a webpage reference list entry.

Newspaper Article (Retrieved Online)

Baker, A. (2014, May 7). Connecticut students show gains in national tests. New York Times . http://www.nytimes.com/2014/05/08/nyregion/national-assessment-of-educational-progress-results-in-Connecticut-and-New-Jersey.html

Include the full date in the format Year, Month Day. Do not include a retrieval date for periodical sources found on websites. Note that for citations, include only the year: Baker (2014). For newspaper articles retrieved from a common academic research database, leave out the URL. For newspaper articles from an online news website that is not an online version of a print newspaper, follow the format for a webpage reference list entry.

OASIS Resources

Oasis webpage.

OASIS. (n.d.). Common reference list examples . Walden University. https://academicguides.waldenu.edu/writingcenter/apa/references/examples

For all OASIS content, list OASIS as the author. Because OASIS webpages do not include publication dates, use “n.d.” for the year.

Interactive Guide

OASIS. (n.d.). Embrace iterative research and writing [Interactive guide]. Walden University. https://academics.waldenu.edu/oasis/iterative-research-writing-web

For OASIS multimedia resources, such as interactive guides, include a description of the resource in brackets after the title.

Online Video/Webcast

Walden University. (2013).  An overview of learning  [Video]. Walden University Canvas.  https://waldenu.instructure.com  

Use this format for online videos such as Walden videos in classrooms. Most of our classroom videos are produced by Walden University, which will be listed as the author in your reference and citation. Note: Some examples of audiovisual materials in the APA manual show the word “Producer” in parentheses after the producer/author area. In consultation with the editors of the APA manual, we have determined that parenthetical is not necessary for the videos in our courses. The manual itself is unclear on the matter, however, so either approach should be accepted. Note that the speaker in the video does not appear in the reference list entry, but you may want to mention that person in your text. For instance, if you are viewing a video where Tobias Ball is the speaker, you might write the following: Tobias Ball stated that APA guidelines ensure a consistent presentation of information in student papers (Walden University, 2013). For more information on citing the speaker in a video, see our page on Common Citation Errors .

Taylor, R. [taylorphd07]. (2014, February 27). Scales of measurement [Video]. YouTube. https://www.youtube.com/watch?v=PDsMUlexaMY

OASIS. (2020, April 15). One-way ANCOVA: Introduction [Video]. YouTube. https://youtu.be/_XnNDQ5CNW8

For videos from streaming sites, use the person or organization who uploaded the video in the author space to ensure retrievability, whether or not that person is the speaker in the video. A username can be provided in square brackets. As a change from APA 6 to APA 7, include the publisher after the title, and do not use "Retrieved from" before the URL. See APA 7, Section 10.12 for more information and examples.

See also reference list entry formats for TED Talks .

Technical and Research Reports

Edwards, C. (2015). Lighting levels for isolated intersections: Leading to safety improvements (Report No. MnDOT 2015-05). Center for Transportation Studies. http://www.cts.umn.edu/Publications/ResearchReports/reportdetail.html?id=2402

Technical and research reports by governmental agencies and other research institutions usually follow a different publication process than scholarly, peer-reviewed journals. However, they present original research and are often useful for research papers. Sometimes, researchers refer to these types of reports as gray literature , and white papers are a type of this literature. See APA 7, Section 10.4 for more information.

Reference list entires for TED Talks follow the usual guidelines for multimedia content found online. There are two common places to find TED talks online, with slightly different reference list entry formats for each.

TED Talk on the TED website

If you find the TED Talk on the TED website, follow the format for an online video on an organizational website:

Owusu-Kesse, K. (2020, June). 5 needs that any COVID-19 response should meet [Video]. TED Conferences. https://www.ted.com/talks/kwame_owusu_kesse_5_needs_that_any_covid_19_response_should_meet

The speaker is the author in the reference list entry if the video is posted on the TED website. For citations, use the speaker's surname.

TED Talk on YouTube

If you find the TED Talk on YouTube or another streaming video website, follow the usual format for streaming video sites:

TED. (2021, February 5). The shadow pandemic of domestic violence during COVID-19 | Kemi DaSilvalbru [Video]. YouTube. https://www.youtube.com/watch?v=PGdID_ICFII

TED is the author in the reference list entry if the video is posted on YouTube since it is the channel on which the video is posted. For citations, use TED as the author.

Walden University Course Catalog

To include the Walden course catalog in your reference list, use this format:

Walden University. (2020). 2019-2020 Walden University catalog . https://catalog.waldenu.edu/index.php

If you cite from a specific portion of the catalog in your paper, indicate the appropriate section and paragraph number in your text:

...which reflects the commitment to social change expressed in Walden University's mission statement (Walden University, 2020, Vision, Mission, and Goals section, para. 2).

And in the reference list:

Walden University. (2020). Vision, mission, and goals. In 2019-2020 Walden University catalog. https://catalog.waldenu.edu/content.php?catoid=172&navoid=59420&hl=vision&returnto=search

Vartan, S. (2018, January 30). Why vacations matter for your health . CNN. https://www.cnn.com/travel/article/why-vacations-matter/index.html

For webpages on the open web, include the author, date, webpage title, organization/site name, and URL. (There is a slight variation for online versions of print newspapers or magazines. For those sources, follow the models in the previous sections of this page.)

American Federation of Teachers. (n.d.). Community schools . http://www.aft.org/issues/schoolreform/commschools/index.cfm

If there is no specified author, then use the organization’s name as the author. In such a case, there is no need to repeat the organization's name after the title.

In APA 7, active hyperlinks for DOIs and URLs should be used for documents meant for screen reading. Present these hyperlinks in blue and underlined text (the default formatting in Microsoft Word), although plain black text is also acceptable. Be consistent in your formatting choice for DOIs and URLs throughout your reference list.

Related Resources

Knowledge Check: Common Reference List Examples

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• How to cite a court case in APA Style

How to Cite Court Cases in APA Style | Format & Examples

Published on February 4, 2021 by Jack Caulfield . Revised on December 27, 2023.

Legal citations (e.g. court cases, laws ) in APA Style look somewhat different from other APA citations. They generally don’t list authors, and abbreviations are used to make them more concise.

Citations for court cases refer to reporters , the publications in which cases are documented. To cite a court case or decision, list the name of the case, the volume and abbreviated name of the reporter, the page number, the name of the court, the year, and optionally the URL.

The case name is italicized in the in-text citation, but not in the reference list. In the reference, specify only a single page number—the page where the coverage of that case begins—instead of a full page range.

You can easily create citations for court cases using our free  APA Citation Generator .

Table of contents

Abbreviations in apa legal citations, citing federal court cases, citing state court cases, frequently asked questions about apa style citations.

Most words are abbreviated in legal citations. This means that a very large number of standard abbreviations exist. Consult resources like this page to familiarize yourself with common abbreviations.

Pages where case information is found online also tend to show the correct form of citation for the case in question. You can check these to make sure you use the right abbreviations.

Note that “v.” (for “versus”) is used between the names of the parties in a case title, though APA recommends “vs.” outside the context of legal citations.

Prevent plagiarism. Run a free check.

Federal court cases are those that take place at the national level in the U.S.—in the U.S. Supreme Court, a circuit court, or a district court.

U.S. Supreme Court

The Supreme Court is the highest federal court, and its decisions are reported in the United States Reports (abbreviated to “U.S.” in the reference). You don’t need to specify the court in parentheses in this case, since the name of the reporter already makes this clear.

Circuit court

Decisions from the U.S. circuit courts are reported in the Federal Reporter . This reporter has appeared in three series; the first is abbreviated as “F.”, the second as “F.2d”, and the third and current series as “F.3d”.

There are 13 circuit courts, so specify which one you’re citing in the parentheses, e.g. “9th Cir.”

District court

Decisions from the U.S. district courts are reported in the Federal Supplements.  Like the Federal Reporter , it has appeared in three series, abbreviated as “F. Supp.”, “F. Supp. 2d”, and “F. Supp. 3d”.

There are many different district courts, so specify which one is being cited in the parentheses, e.g. “N.D. Ohio.”

State courts are those that operate in specific states rather than federally. The two kinds of state court that are commonly cited are supreme courts and appellate courts. They are both cited in a similar format.

In APA Style , when you’re citing a recent court case that has not yet been reported in print and thus doesn’t have a specific page number, include a series of three underscores (___) where the page number would usually appear:

With APA legal citations, it’s recommended to cite all the reporters (publications reporting cases) in which a court case appears. To cite multiple reporters, just separate them with commas in your reference entry . This is called parallel citation .

Don’t repeat the name of the case, court, or year; just list the volume, reporter, and page number for each citation. For example:

No, including a URL is optional in APA Style reference entries for legal sources (e.g. court cases , laws ). It can be useful to do so to aid the reader in retrieving the source, but it’s not required, since the other information included should be enough to locate it.

Cite this Scribbr article

If you want to cite this source, you can copy and paste the citation or click the “Cite this Scribbr article” button to automatically add the citation to our free Citation Generator.

Caulfield, J. (2023, December 27). How to Cite Court Cases in APA Style | Format & Examples. Scribbr. Retrieved August 12, 2024, from https://www.scribbr.com/apa-examples/court-case/

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How do I reference a case study… in the Cranfield Author-date style?

If you have read our previous post Looking for case studies? , you’ll have discovered some of the best MIRC resources for finding case studies on a topic or company.

Now that you know the top sources for case studies, you now need to know how to reference and cite one in your work. If your case study is published in a journal, you just need to follow the format for referencing a journal article. For example:

Ojasalo, J. (2008) ‘Management of innovation networks: a case study of different approaches’, European Journal of Innovation Management , 11 (1), pp. 51-86.

Poczter, S. L. and Jankovic, L. M. (2014) ‘The Google Car: Driving Toward A Better Future?’, Journal of Business Case Studies , 10 (1). Available at: http://www.cluteinstitute.com/ojs/index.php/JBCS/article/view/8324 (Accessed: 21 October 2015).

If your case study isn’t published as a journal article, then you need to use the following format. Don’t worry it isn’t as difficult as it sounds!

This is what you need to include in your Author-date reference :

• Author(s) (surname, initials) or organisation
• (Year of publication)
• Number/identifier of case study (if available)
• Title of case
• Place of publication: Publisher

If the case study is available online, you can add the following:

• Available at: URL
• (Accessed: date)

Here are some examples of what your bibliographic references might look like in the Author-date style:

Aaker, J. and Chang, V. (2010) Case No. M321 : Obama and the power of social media and technology . Stanford: Stanford Business School.

Max, S. (2014) A Small Brand Tries to Escape the Confusing Shadow of a Big Brand. New York: The New York Times. Available at: http://www.nytimes.com/2014/05/08/business/smallbusiness/a-small-brand-tries-to-escape-the-confusing-shadow-of-a-big-brand.html?ref=topics&_r=0 (Accessed: 21 October 2015).

Polzer, J. T. (2003) Leading Teams . Boston: Harvard Business School Publishing.

As always if you have any questions about referencing, pop into MIRC or contact us .

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How do I cite a case study that is in my textbook both in-text and for my reference page - APA format?

To see how to cite a textbook (and a case study from it), visit the  APA Help  guide:

• Click on References and In-text Citation Examples
• See the drop down arrow by Books  for one that matches your textbook.

Books: General Format

Author Last Name, First & Middle Initials. (Year).  Title of book: Subtitle of book.  City, ST: Publisher.

In-text : Paraphrase : (Last Name, Year).  Quotation : (Last Name, Year, p. Page Number).

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How to cite ChatGPT

Use discount code STYLEBLOG15 for 15% off APA Style print products with free shipping in the United States.

We, the APA Style team, are not robots. We can all pass a CAPTCHA test , and we know our roles in a Turing test . And, like so many nonrobot human beings this year, we’ve spent a fair amount of time reading, learning, and thinking about issues related to large language models, artificial intelligence (AI), AI-generated text, and specifically ChatGPT . We’ve also been gathering opinions and feedback about the use and citation of ChatGPT. Thank you to everyone who has contributed and shared ideas, opinions, research, and feedback.

In this post, I discuss situations where students and researchers use ChatGPT to create text and to facilitate their research, not to write the full text of their paper or manuscript. We know instructors have differing opinions about how or even whether students should use ChatGPT, and we’ll be continuing to collect feedback about instructor and student questions. As always, defer to instructor guidelines when writing student papers. For more about guidelines and policies about student and author use of ChatGPT, see the last section of this post.

Quoting or reproducing the text created by ChatGPT in your paper

If you’ve used ChatGPT or other AI tools in your research, describe how you used the tool in your Method section or in a comparable section of your paper. For literature reviews or other types of essays or response or reaction papers, you might describe how you used the tool in your introduction. In your text, provide the prompt you used and then any portion of the relevant text that was generated in response.

Unfortunately, the results of a ChatGPT “chat” are not retrievable by other readers, and although nonretrievable data or quotations in APA Style papers are usually cited as personal communications , with ChatGPT-generated text there is no person communicating. Quoting ChatGPT’s text from a chat session is therefore more like sharing an algorithm’s output; thus, credit the author of the algorithm with a reference list entry and the corresponding in-text citation.

When prompted with “Is the left brain right brain divide real or a metaphor?” the ChatGPT-generated text indicated that although the two brain hemispheres are somewhat specialized, “the notation that people can be characterized as ‘left-brained’ or ‘right-brained’ is considered to be an oversimplification and a popular myth” (OpenAI, 2023).

OpenAI. (2023). ChatGPT (Mar 14 version) [Large language model]. https://chat.openai.com/chat

You may also put the full text of long responses from ChatGPT in an appendix of your paper or in online supplemental materials, so readers have access to the exact text that was generated. It is particularly important to document the exact text created because ChatGPT will generate a unique response in each chat session, even if given the same prompt. If you create appendices or supplemental materials, remember that each should be called out at least once in the body of your APA Style paper.

When given a follow-up prompt of “What is a more accurate representation?” the ChatGPT-generated text indicated that “different brain regions work together to support various cognitive processes” and “the functional specialization of different regions can change in response to experience and environmental factors” (OpenAI, 2023; see Appendix A for the full transcript).

Creating a reference to ChatGPT or other AI models and software

The in-text citations and references above are adapted from the reference template for software in Section 10.10 of the Publication Manual (American Psychological Association, 2020, Chapter 10). Although here we focus on ChatGPT, because these guidelines are based on the software template, they can be adapted to note the use of other large language models (e.g., Bard), algorithms, and similar software.

The reference and in-text citations for ChatGPT are formatted as follows:

• Parenthetical citation: (OpenAI, 2023)
• Narrative citation: OpenAI (2023)

Let’s break that reference down and look at the four elements (author, date, title, and source):

Author: The author of the model is OpenAI.

Date: The date is the year of the version you used. Following the template in Section 10.10, you need to include only the year, not the exact date. The version number provides the specific date information a reader might need.

Title: The name of the model is “ChatGPT,” so that serves as the title and is italicized in your reference, as shown in the template. Although OpenAI labels unique iterations (i.e., ChatGPT-3, ChatGPT-4), they are using “ChatGPT” as the general name of the model, with updates identified with version numbers.

The version number is included after the title in parentheses. The format for the version number in ChatGPT references includes the date because that is how OpenAI is labeling the versions. Different large language models or software might use different version numbering; use the version number in the format the author or publisher provides, which may be a numbering system (e.g., Version 2.0) or other methods.

Bracketed text is used in references for additional descriptions when they are needed to help a reader understand what’s being cited. References for a number of common sources, such as journal articles and books, do not include bracketed descriptions, but things outside of the typical peer-reviewed system often do. In the case of a reference for ChatGPT, provide the descriptor “Large language model” in square brackets. OpenAI describes ChatGPT-4 as a “large multimodal model,” so that description may be provided instead if you are using ChatGPT-4. Later versions and software or models from other companies may need different descriptions, based on how the publishers describe the model. The goal of the bracketed text is to briefly describe the kind of model to your reader.

Source: When the publisher name and the author name are the same, do not repeat the publisher name in the source element of the reference, and move directly to the URL. This is the case for ChatGPT. The URL for ChatGPT is https://chat.openai.com/chat . For other models or products for which you may create a reference, use the URL that links as directly as possible to the source (i.e., the page where you can access the model, not the publisher’s homepage).

Other questions about citing ChatGPT

You may have noticed the confidence with which ChatGPT described the ideas of brain lateralization and how the brain operates, without citing any sources. I asked for a list of sources to support those claims and ChatGPT provided five references—four of which I was able to find online. The fifth does not seem to be a real article; the digital object identifier given for that reference belongs to a different article, and I was not able to find any article with the authors, date, title, and source details that ChatGPT provided. Authors using ChatGPT or similar AI tools for research should consider making this scrutiny of the primary sources a standard process. If the sources are real, accurate, and relevant, it may be better to read those original sources to learn from that research and paraphrase or quote from those articles, as applicable, than to use the model’s interpretation of them.

We’ve also received a number of other questions about ChatGPT. Should students be allowed to use it? What guidelines should instructors create for students using AI? Does using AI-generated text constitute plagiarism? Should authors who use ChatGPT credit ChatGPT or OpenAI in their byline? What are the copyright implications ?

On these questions, researchers, editors, instructors, and others are actively debating and creating parameters and guidelines. Many of you have sent us feedback, and we encourage you to continue to do so in the comments below. We will also study the policies and procedures being established by instructors, publishers, and academic institutions, with a goal of creating guidelines that reflect the many real-world applications of AI-generated text.

For questions about manuscript byline credit, plagiarism, and related ChatGPT and AI topics, the APA Style team is seeking the recommendations of APA Journals editors. APA Style guidelines based on those recommendations will be posted on this blog and on the APA Style site later this year.

Update: APA Journals has published policies on the use of generative AI in scholarly materials .

We, the APA Style team humans, appreciate your patience as we navigate these unique challenges and new ways of thinking about how authors, researchers, and students learn, write, and work with new technologies.

American Psychological Association. (2020). Publication manual of the American Psychological Association (7th ed.). https://doi.org/10.1037/0000165-000

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Utilizing crowdsourced data for timely investigation of catastrophic landslide accidents: a case study of the coal mine collapse in inner Mongolia, China

• Original Paper
• Published: 12 August 2024
• Volume 83 , article number  354 , ( 2024 )

Cite this article

• Pengju An 1 ,
• Rui Yong 1 ,
• Changshuo Wang 1 ,
• Shixun Jia 2 &
• Kun Fang   ORCID: orcid.org/0000-0002-8866-4076 3 , 4  

Catastrophic landslide accidents are a significant global issue, resulting in considerable loss of life and property damage. However, traditional landslide survey methods are typically time-consuming and require expensive equipment, which hinders timely responses to the need for landslide rescue and accident investigation. This study proposes a method for utilizing timely crowdsourced data in the preliminary investigation of catastrophic landslide accidents. Specifically, we examine the case of the Xinjing Landslide in Inner Mongolia, China, which occurred on February 23, 2023. We demonstrate the ability of crowdsourced data to provide real-time information about landslide occurrence, size, movement direction, and speed. Moreover, we analyze the possible triggers of the landslide based on the gathered data. Our findings suggest that prompt crowdsourced data can provide valuable information about landslides and potentially save lives through timely responses. This study emphasizes the potential of timely crowdsourced data in enhancing landslide investigation and calls for further research into the integration of crowdsourced data with traditional monitoring methods.

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This research is supported by Ningbo Natural Science Foundation (Grant No. 2023J084) and National Nature Science Foundation of China (No. 42207216).

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Institute of Rock Mechanics, Ningbo University, Ningbo, 315211, China

Pengju An, Rui Yong & Changshuo Wang

School of Civil Engineering, Shandong University, Jinan, 250061, China

Faculty of Engineering, China University of Geosciences (Wuhan), Wuhan, 430074, China

The Hong Kong University of Science and Technology, Hong Kong, China

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Pengju An: Methodology, Software, Validation, Writing – original draft. Rui Yong: Writing – review & editing. Changshuo Wang: Writing – review & editing. Shixun Jia: Visualization. Kun Fang: Conceptualization, Methodology, Investigation, Writing – review & editing.

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Correspondence to Kun Fang .

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An, P., Yong, R., Wang, C. et al. Utilizing crowdsourced data for timely investigation of catastrophic landslide accidents: a case study of the coal mine collapse in inner Mongolia, China. Bull Eng Geol Environ 83 , 354 (2024). https://doi.org/10.1007/s10064-024-03848-x

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Received : 10 January 2024

Accepted : 30 July 2024

Published : 12 August 2024

DOI : https://doi.org/10.1007/s10064-024-03848-x

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