What You Need to Know About Citing Psychology 2e in APA Style
Citing Psychology 2e in APA format seems straightforward until you actually sit down to do it. The book is the openStax Psychology second edition, a widely used OER textbook that gets cited constantly in undergraduate papers. Most people mess up the details without realizing it. Let me walk you through the actual format and then explain where things go wrong in practice. Here is the correct reference list entry: OpenStax. (2020). Psychology 2e. OpenStax. https://openstax.org/details/books/psychology
And the in-text citation looks like this: (OpenStax, 2020) Or with a direct quote:
(OpenStax, 2020, p. 45) The author is listed as the corporate author "OpenStax" rather than individual names. That trips people up because the cover and website sometimes list contributing authors. The APA 7th edition rule is clear: when an organization is the author, use the organization name. OpenStax holds the copyright and is the publishing body. Do not list the contributing authors in the reference entry unless your instructor specifically requests it, which is rare and usually contrary to APA guidelines. For the in-text citation, you treat OpenStax as a group author every time. No abbreviations after the first use like you would with organizations such as the APA or WHO. OpenStax stays as OpenStax throughout the paper.
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Where People Go Wrong
I have graded enough undergraduate papers to see the same mistakes repeated. Here are the ones that show up most often. Listing individual authors instead of the corporate author. The second edition has a long list of contributing writers. Some students copy those names into the reference entry. That is incorrect under APA 7th edition. OpenStax is the author. The contributing writers are credited on the title page and in the acknowledgments, but they are not authors in the bibliographic sense for this publication. Including the retrieval date. Some students add a retrieval date like "Retrieved March 15, 2025, from..." APA only requires a retrieval date when the content is likely to change over time, such as a live social media page or a wiki that gets continuously edited. OpenStax textbooks are stable. The content does not change in between updates, and even when updates happen, the URL remains the same. Adding a retrieval date is unnecessary and technically incorrect.
Formatting the title incorrectly. The book title should be in italics and in sentence case, meaning only the first word and any proper nouns are capitalized. It is not in title case. So it is Psychology 2e, not Psychology 2E or Psychology Second Edition. The "2e" is part of the official title as published by OpenStax. Using the wrong URL. The correct URL is https://openstax.org/details/books/psychology. Some students link to the main OpenStax homepage or to a course-specific LMS link. The reference needs the direct book URL so a reader can locate the exact source.
A Problem I Hit More Than Once
There is an edge case that comes up when students are citing a specific chapter rather than the whole book. Psychology 2e is structured as individual chapters that can be assigned separately. If your assignment asks you to cite Chapter 8 on Learning, the format changes slightly. The chapter-level citation goes like this: OpenStax. (2020). Learning. In Psychology 2e. OpenStax. https://openstax.org/details/books/psychology
The chapter title is not italicized. The book title is. The rest stays the same. The in-text citation does not change: (OpenStax, 2020). You do not add a page number unless you are quoting directly. Many students put a chapter number in the in-text citation like (OpenStax, 2020, Ch. 8), which is not standard APA. Chapter numbers belong in the reference, not the parenthetical. I ran into this repeatedly when students submitted papers where half the references cited the full book and the other half cited individual chapters, but they formatted them identically. The distinction matters for clarity. A reader should be able to tell from your reference list whether you engaged with the textbook as a whole or focused on specific sections.
What APA 7th Does Differently Here
If you learned APA 6th edition in an earlier class, a couple of things have shifted. The publisher location (City, State) is no longer required. So you do not write "Houston, TX: OpenStax." Just the publisher name is sufficient. The DOI or URL is now the preferred locator, and since OpenStax books do not have DOIs, the stable URL is what you use. Another change from 6th to 7th edition that affects this citation: the "Retrieved from" phrasing is gone. Even if you needed a retrieval date, you would not use the "Retrieved from" language. You simply provide the URL. For Psychology 2e, you just end with the URL and nothing else.
Practical Tips That Actually Help
Generating these citations manually takes about 3 to 5 minutes per entry if you are careful. If you are doing a paper with ten references and half of them are from the same textbook, you waste time repeating the same work. I use Zotero with the APA 7th style selected. I import the OpenStax page directly from the URL, and it auto-populates the reference correctly with the corporate author, correct title formatting, and the right URL. It cuts the process to under a minute per source once your library is set up. Even with citation software, always double-check the output. Zotero sometimes defaults to listing individual chapter authors for OpenStax materials because the metadata on the website includes contributor names. I have caught it generating entries with "Author, A., & Author, B." instead of OpenStax as the corporate author. Check every single entry against the official APA guide before you paste it into your paper.
What This Citation System Does Not Handle Well
Here is the honest part. APA style works fine for Psychology 2e as a print or web-based textbook. It does not handle well if you are using a specific edition that has been significantly revised with different pagination. The OpenStax platform occasionally releases minor updates, and while the core content stays the same, page numbers in the PDF version may shift between print runs. If you are citing a PDF you downloaded from Canvas or another LMS, use the page numbers from that specific file, not the generic online version. Also, if your instructor is still using APA 6th edition guidelines despite APA officially moving to the 7th edition in 2020, your citation will look wrong in their eyes even if it is technically correct. I have seen this happen more times than I can count. When in doubt, ask your instructor which edition they want. It takes thirty seconds and saves you from losing points on formatting. The reference entry for Psychology 2e in APA 7th is not difficult. The mistakes come from applying old rules, misreading who the author is, or letting citation tools run unchecked. Get the format right once, keep it in your notes, and verify everything before submission.
