How to Cite a Book in APA, MLA and Chicago
How to cite a book in APA 7th, MLA 9th and Chicago 17th, with reference and in-text examples for one or two authors, editions, translations and chapters.
Last updated 9 min read
Key takeaways
Plenty of things you find through a browser are not “websites” for citation purposes. A journal article you read online is cited as a journal article, with its DOI. A report from a government agency or charity, downloaded as a PDF, is cited as a report. A story on a newspaper's site is cited as a news article. The webpage format is for content that exists only as a page on a site: an organization's explainer, a museum's collection page, an online encyclopedia entry, a guide like this one.
Getting this right first saves effort, because the other formats are often simpler and more convincing to your reader. It is also the moment to ask whether the page is worth citing at all. Many instructors will not accept an open wiki or an unsigned page as evidence; use it to find better sources, then cite those. The guide to finding credible sources covers what to look for.
Collect these details while the page is open. Coming back later is how citations end up with a dead link and a guessed date.
APA's pattern is Author, A. A. (Year, Month Day). Title of page. Site Name. URL. The page title is italicized in sentence case, the site name is plain, and there is no period after the URL. If the author and the site name are the same organization, give the name once, as author.
In-text, use the author and year: (Nguyen, 2024). For an organization with a familiar abbreviation, give both the first time, (World Health Organization [WHO], 2024), then (WHO, 2024). With no author, use the page title in italics and title case; with no date, (Nguyen, n.d.). Webpages rarely have page numbers, so for a quotation give a paragraph number or section heading. The APA citation guide covers the rest of the system. The reference examples below use an invented page at an example.org address; italics cannot be shown here, so italicize each page title in your own list:
MLA's pattern is Author. “Title of Page.” Title of Website, Publisher, Day Month Year, URL. The page title goes in quotation marks and the website name in italics. Leave out the publisher when it is essentially the same as the website name. MLA abbreviates most month names (Jan., Mar., Sept.) and generally drops the “https://” from the URL.
In-text, MLA uses the author's last name alone, (Nguyen), because webpages have no page numbers, and you should not invent them. With no author, use a shortened title in quotation marks: (“How Tides Work”). The MLA citation guide explains the core-elements template behind these entries.
In Chicago, the page title goes in quotation marks and the website name is set in roman type, without italics, unless it is the name of a publication such as a newspaper. Use the publication date if there is one, write “last modified” before an update date, and give an access date only when the page shows no date at all.
When a page has no named author, start with the organization that owns the site, or with the page title if that reads more clearly. The Chicago style citation guide covers notes, bibliographies and author-date in full.
Use this as a quick check once you have drafted an entry and want to confirm each detail matches your style.
| APA (7th) | MLA (9th) | Chicago (17th) | |
|---|---|---|---|
| Page title | Italics, sentence case | Quotation marks, title case | Quotation marks, headline style |
| Website name | Plain; omitted if same as author | Italics | Roman, no italics |
| Date format | (2024, March 5) | 5 Mar. 2024 | March 5, 2024 |
| No date | (n.d.), plus a retrieval date if the page may change | “Accessed” date at the end | “Accessed” date in place of the date |
| No author | Title moves to the author position | Start with the title | Start with the site owner or the title |
| URL | Full URL, no final period | Usually without https:// | Full URL |
| In-text | (Nguyen, 2024) | (Nguyen) | Footnote, or (Nguyen 2024) |
A few kinds of online content have their own formats, and using the right one makes your list easier to check:
Webpages change, which makes them awkward to work from weeks later. If you save a page you plan to cite as a PDF and upload it to Cavua's Work space, it sits alongside your other sources and you can research across all of them at once. Answers point to the page in the document, so you can check the exact wording you are citing against the copy you saved.
You can also chat about a source, use “Quiz me” to check you understood it, and export a session to keep with your notes. What each plan includes is listed on the pricing page.
How to cite a book in APA 7th, MLA 9th and Chicago 17th, with reference and in-text examples for one or two authors, editions, translations and chapters.
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First check whether an organization is the author; most pages without a byline have one, and it goes in the author position. If there is truly no author, start with the page title. APA then uses the italicized title in the in-text citation, MLA a shortened title in quotation marks, and Chicago starts with the site's owner or the title.
In APA, write (n.d.) where the year goes; if the page is likely to change, add a retrieval date before the URL: Retrieved September 12, 2026, from the address. In MLA, leave the date out and add “Accessed 12 Sept. 2026.” at the end. In Chicago, give the access date instead. Never substitute the copyright year from the site footer.
It depends on the style and the page. MLA treats the access date as optional but useful for undated pages. Chicago uses it only when no publication or revision date is shown. APA uses a retrieval date for pages likely to change, which includes many undated pages and anything like a live dashboard.
Check with your instructor, but most academic assignments do not accept Wikipedia as a source, because anyone can edit it and it summarizes other sources rather than reporting original work. Use it to orient yourself and to find the references listed at the bottom of an article, then read and cite those sources directly.
In APA, give the author and year: (Nguyen, 2024). In MLA, the author's last name alone: (Nguyen), since webpages have no page numbers. In Chicago notes-bibliography, add a numbered footnote; in Chicago author-date, use (Nguyen 2024). For an APA quotation, add a paragraph number or section heading.
Cite the version you used. If you saved a PDF or can find the page in a web archive, the archived copy shows what the page said when you read it, and you can point readers to it. This is why it is worth saving a copy of every page you cite at the time you use it.
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