How to Cite a Website in American Chemical Society (ACS)
To cite a website in ACS, give the author or organization, the page title, the site name, the URL, and the date you accessed it, with a publication or update date if shown. ACS requires the accessed date because web content is not fixed.
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How to cite a website in ACS step by step
- Name the author. Use a personal author if named, otherwise treat the owning organization as the author.
- Give the page title. Enter the specific page title in title case, distinct from the site name.
- Name the site. Identify the website or hosting organization.
- Add any dates. Include the publication or last-updated date if it is shown on the page.
- Paste the URL. Give the full direct URL to the page.
- Record the accessed date. End with the accessed date, written in the ACS form, which ACS treats as required for web sources.
ACS website citation format
An ACS website reference runs author or organization, page title, site name, URL, and accessed date, with any publication date included. The in-text marker follows the numeric or author-date system you are using.
Common website citation variations
How do I cite a website with no author in ACS?
Use the owning organization as the author, or begin with the page title when none is named, then give the URL and accessed date.
How do I cite a website with no date in ACS?
Omit the publication date and rely on the accessed date, which ACS always requires for web pages.
Does ACS require an accessed date for websites?
Yes. ACS marks the accessed date as required for web content because pages can change after you read them.
How do I format the accessed date in ACS?
Give the date you viewed the page using the ACS date form. The generator applies the correct punctuation once you enter it.
Cite any source in ACS
See the full American Chemical Society (ACS) citation generator and every source type →
Website citation FAQ
Is the accessed date mandatory for websites in ACS?
Yes. For web pages ACS treats the accessed date as a required element of the reference.
Do I cite the page or the whole site in ACS?
Cite the specific page you used, with its own title and URL, rather than the homepage.