Learning how to cite an ebook is easier than most students expect, because the major style guides now treat e-books much like their print counterparts. Whether you read on a Kindle, a tablet app, a library database, or a browser, the core elements stay the same: author, year or date, title, and publisher or platform. This guide walks through e-book citations in APA 7, MLA 9, and Chicago, covers the tricky issue of missing page numbers, and shows the in-text forms for each style so your references stay clean and consistent.
What Counts as an E-book?
An e-book is any book you access in a digital format rather than as a physical printed copy. That includes Kindle, Nook, and Apple Books editions, EPUB or PDF downloads, titles read through library databases like EBSCO or ProQuest, and full-text books hosted on sites such as Google Books or Project Gutenberg. The format you read on matters less than where the book came from and whether it has a stable link.
The good news for the latest editions of every major style is that you no longer need to describe the device or app in most cases. Modern guidance focuses on the source itself, not the screen. If you are unsure which style to follow, our overview of citation styles explained can help you pick the right one for your assignment.
How to Cite an E-book in APA 7
This is one of the biggest changes in APA 7: the format, platform, and device are no longer required. You cite an e-book exactly as you would a print book, using sentence case for the title and italics for the book title. Only add a DOI or URL if the book came from an academic database or website and that link adds value. If you read a standard commercial e-book (a regular Kindle purchase, for example), you cite it like a print book with no URL.
Kahneman, D. (2011). Thinking, fast and slow. Farrar, Straus and Giroux.
In-text: (Kahneman, 2011).
When the e-book comes from a library database or website, add the URL (or a DOI if one is assigned) at the end with no period after it. A free, full-text classic from a site like Project Gutenberg is a clear case:
Shelley, M. (1818). Frankenstein; or, the modern Prometheus. https://www.gutenberg.org/ebooks/84
In-text: (Shelley, 1818).
For a direct quote, APA wants a location to help readers find the passage. Because e-book page numbers shift with font size, cite the chapter or section name instead, for example (Kahneman, 2011, Chapter 3). For more on the basics, see our APA format guide and the rules for APA in-text citations. You can also build the entry in seconds with our APA citation generator.
How to Cite an E-book in MLA 9
MLA 9 uses its container system, and an e-book version is named as a version element, while the platform (Kindle, EBSCOhost, Google Books) is treated as a container or publication detail. Titles use title case, but remember that in MLA all prepositions stay lowercase no matter their length. Omit https:// from any URL.
Kahneman, Daniel. Thinking, Fast and Slow. Kindle ed., Farrar, Straus and Giroux, 2011.
In-text: (Kahneman).
When you access the book through a database or website, name that platform as the container and add the location:
Shelley, Mary. Frankenstein. 1818. Project Gutenberg, 2008, gutenberg.org/ebooks/84.
In-text: (Shelley).
MLA in-text citations normally pair the author with a page number and use no comma between them, as in (Kahneman 27). For a Kindle or other e-book without fixed pages, cite a chapter or section instead, such as (Kahneman, ch. 3). Our MLA format guide and the dedicated page on MLA in-text citations cover this in detail, and the MLA citation generator will format the works cited entry for you.
How to Cite an E-book in Chicago Style
Chicago offers two systems. Notes and bibliography (common in history and the humanities) uses footnotes plus a bibliography entry. Author-date (common in the sciences) uses parenthetical citations. For an e-book, Chicago asks you to name the format or platform at the end of the entry so readers know which version you used. For databases or websites, include the URL.
Here is the notes and bibliography form, showing the full footnote, the shortened note, and the bibliography entry:
Bibliography: Kahneman, Daniel. Thinking, Fast and Slow. New York: Farrar, Straus and Giroux, 2011. Kindle.
Note: 1. Daniel Kahneman, Thinking, Fast and Slow (New York: Farrar, Straus and Giroux, 2011), chap. 3, Kindle. Shortened note: Kahneman, Thinking, Fast and Slow, chap. 3.
And the author-date variant for the same book:
Reference list: Kahneman, Daniel. 2011. Thinking, Fast and Slow. New York: Farrar, Straus and Giroux. Kindle.
In-text: (Kahneman 2011, chap. 3).
For a deeper walkthrough, see our Chicago style guide and the explainer on Chicago footnotes. The Chicago citation generator handles both systems automatically. If your instructor uses the student-focused Turabian variant, our Turabian citation generator applies the same rules.
The Page Number Problem (and Kindle Locations)
The single biggest headache with e-books is locating a quotation. Because reflowable e-books change page breaks as readers adjust font size, the same passage can appear on different pages on different devices. That makes raw page numbers unreliable.
- Use a stable page number only if the e-book preserves the print pagination (some PDF-based e-books do).
- Otherwise cite the chapter, section heading, or numbered paragraph, such as Chapter 3 or “Conclusion.”
- Do not cite Kindle location numbers. APA, MLA, and Chicago all advise against them because they are unique to one device and reader, so they will not help others find the passage.
If your e-book is actually a PDF download rather than a reflowable title, you may have fixed page numbers to work with, in which case our guide on how to cite a PDF is the better fit.
Common Mistakes to Avoid
- Adding “[Kindle edition]” or “[e-book]” in APA 7. The format note is no longer required and should be left out.
- Including Kindle location numbers in any style. Always switch to a chapter or section instead.
- Forgetting that an e-book chapter you read alone may need a chapter citation, not a whole-book one. See how to cite a chapter in a book.
- Using title case in APA. APA titles use sentence case, capitalizing only the first word, proper nouns, and the first word after a colon.
- Leaving https:// in an MLA entry, or dropping the DOI from an APA database book that has one.
- Treating a textbook differently from a regular book. The same e-book rules apply, though our guide on how to cite a textbook covers edition details.
Quick Tips
- Confirm the author, year, title, and publisher first, then decide whether a URL or DOI is needed.
- Match your in-text locator to the style: chapter or section for quotes, never a device location.
- Be consistent across your reference page or works cited list so every entry follows the same pattern.
- If you cite many books, the general how to cite a book guide pairs well with this one.
E-books no longer deserve their reputation as citation troublemakers. Identify the author, date, title, and source, drop any unnecessary format notes, and reach for a chapter or section heading whenever you would normally cite a page. Do that, and your APA, MLA, or Chicago e-book references will be accurate every time. When you want to skip the manual formatting, run your details through the matching generator and copy a finished, correctly styled citation.