How do I cite a source with no date in MLA style?

When an online source (e.g. web page, blog post) doesn’t list a publication date, you should instead list an access date.

Unlike a publication date, this appears at the end of your MLA Works Cited entry, after the URL, e.g. “A Complete Guide to MLA Style.” Scribbr, www.scribbr.com/category/mla/. Accessed 28 Mar. 2021.

For offline sources with no publication date shown, don’t use an access date—just leave out the date.