An access date is typically included in the citation to show when you, the researcher, viewed the source. If you revisited the page several times, use the most recent date.
It's best to include this only for online sources that don't have a clear publication or modification date of their own and that may be changed over time. If the source were later updated, your citation would indicate that on that one day, at least, it said (or didn't say) something.
Instructors may sometimes require you to include an access date for all your citations. This is their attempt at seeing if you procrastinated in finding your sources or did you work steadily on your project.
MLA
Add "Accessed DD Month YYYY." to the end of the citation, after the link.
Doe, Jane. "Title of Page." Website, link.com. Accessed 1 Oct. 2025.
APA
Most sources will not need an access date by APA's guidelines. Use "Retrieved...from" added before the link.
Doe, J. (n.d.) Title of page. Website. Retrieved October 1, 2025, from https://link.com
