Why you need to cite links the same way you cite books

A citation tells your reader where you found information so they can check it themselves or learn more. When you quote or paraphrase something from a website, you need to cite that link just as you would cite a printed book. The difference is that web pages can change or disappear, so a proper citation includes the date you accessed it.

Most readers won't follow every link you cite, but they should be able to if they want to. A citation without a working link or without enough detail to find the page again defeats its purpose. The format you use depends on what your teacher, editor, or publication asks for — but the core information stays the same across all of them.

Key Takeaways

  • Every citation of a link needs the author (if named), the page title, the full URL, and the date you viewed it.
  • MLA, APA, and Chicago are the three most common citation styles, and each arranges these details in a different order.
  • If no author is listed, use the organization that published the page instead.
  • Copy the URL directly from your browser's address bar rather than typing it by hand to avoid errors.
  • If a page has no publication date, use the date you accessed it as your reference point.

The four pieces of information every link citation needs

Before you worry about format, gather these four things: the author's name (or the organization if no individual is named), the title of the page or article, the full URL, and the date. If the page lists a publication date, use that; if not, use the date you viewed it.

The author is usually at the top or bottom of the page. If you see "By Sarah Chen" or "Written by the CDC," that's your author. If the page is from a company website with no individual byline — like a product page or FAQ — the company itself is the author. Government pages often list the agency as the author.

The page title is usually the headline at the top of the page or the text in your browser tab. The URL is the full web address in your address bar, starting with https:// or http://. Copy it directly rather than typing it; one wrong character breaks the link for your reader.

MLA format for citing links

MLA (Modern Language Association) is the standard in high school and undergraduate humanities classes. The format is: Author. "Page Title." Website Name, Publication Date, URL. Accessed Date.

Here's a real example: Chen, Sarah. "How to Spot Phishing Emails." Everyday Tech, 15 March 2024, www.everydaytech.com/phishing-emails. Accessed 22 August 2024.

If there's no individual author, start with the organization: "CDC. 'Vaccine Safety Monitoring.' Centers for Disease Control and Prevention, 10 January 2024, www.cdc.gov/vaccines/safety. Accessed 18 August 2024."

Notice that the page title goes in quotation marks, the website name is italicized, and the access date comes at the end. If you're citing multiple pages from the same website, you still include the website name each time.

APA format for citing links

APA (American Psychological Association) is standard in social sciences, education, and business writing. The format is: Author, A. A. (Year, Month Date). Page title. Website Name. Retrieved from URL

Here's the same example in APA: Chen, S. (2024, March 15). How to spot phishing emails. Everyday Tech. Retrieved from www.everydaytech.com/phishing-emails

APA puts the author's last name first, then initials. The publication date goes in parentheses right after the author. The page title is italicized (not in quotation marks), and you end with "Retrieved from" followed by the URL. You do not need to include your access date in APA unless the page is likely to change, like a wiki or a social media post.

Chicago style for citing links

Chicago style is used in history, some business writing, and book publishing. It has two versions: notes-bibliography (used more in humanities) and author-date (used more in sciences). Here's the notes-bibliography version, which is what most people mean when they say "Chicago style."

In a footnote or endnote, write: Author First Name Last Name, "Page Title," Website Name, accessed Month Date, Year, URL.

Example: Sarah Chen, "How to Spot Phishing Emails," Everyday Tech, accessed August 22, 2024, www.everydaytech.com/phishing-emails.

In your bibliography at the end, reverse the author's name: Chen, Sarah. "How to Spot Phishing Emails." Everyday Tech. Accessed August 22, 2024. www.everydaytech.com/phishing-emails.

What to do when information is missing

Not every page lists an author or a clear publication date. When information is missing, work with what you have. If there's no author, start with the page title or the organization name. If there's no publication date, use your access date instead — that's the date you know the information was there and accurate.

Some pages update constantly without marking a new date each time. If you're citing a page like that, note in your citation that it was "last accessed" on a specific date. This tells your reader that the page may have changed since you viewed it.

If a URL is extremely long or contains tracking codes, you can shorten it to the main page path. For example, if the full URL is www.example.com/articles/2024/08/phishing?utm_source=email&utm_medium=newsletter, you can cite it as www.example.com/articles/2024/08/phishing. The tracking codes don't help your reader find the page.

How to format citations in your document

Once you've written your citations, the way you place them in your document depends on your style guide. MLA and APA put citations in parentheses right after the quoted or paraphrased material, then list the full citation in a Works Cited (MLA) or References (APA) section at the end. Chicago style uses footnotes or endnotes that link to a bibliography.

Your teacher or editor will tell you which style to use. If they don't specify, ask — it's better to ask than to guess and reformat everything later. Most word processors have built-in citation tools (in Microsoft Word, look for "Citations" under the References tab; in Google Docs, use "Tools" then "Citations") that can format citations for you once you enter the information.

Frequently Asked Questions

Do I need to cite a link if I'm just mentioning it casually?

If you're saying "I found this on Wikipedia" or "according to the CDC website," you should still cite it formally if you're writing something that will be graded, published, or used professionally. For casual writing like a text message or a social media post, a full citation isn't expected. But if there's any chance someone will want to verify what you said, cite it.

What if the website doesn't have a publication date anywhere?

Use the date you accessed the page. This tells your reader when you know the information was current. If the page looks like it hasn't been updated in years, you can note that in your citation — for example, in Chicago style: "last accessed August 22, 2024" makes it clear you're citing an older page.

Can I shorten a really long URL in my citation?

Yes, but only to the main article or page path. Remove tracking codes and session IDs (the parts with question marks and ampersands at the end), but keep enough of the URL that your reader can find the page. When in doubt, keep more rather than less.

Should I cite a link if I'm quoting from a PDF I downloaded?

Yes. Cite it the same way you would cite the web page, using the URL where you found the PDF. If the PDF has its own publication date, use that; otherwise use your access date. The format stays the same whether you read it on screen or downloaded it.

What if I'm citing a social media post or a comment on a website?

Treat the author as the person who posted, the title as the text of the post (or the first part of it if it's very long), and the website as the platform (Twitter, Reddit, Instagram, etc.). Include the date the post was published. These citations can look awkward because social media posts are short, but the same principle applies: your reader should be able to find what you're referencing.