How do I cite an advertisement in print and online?
To cite an advertisement in a print magazine, follow the MLA format template. Provide the title of the advertisement or a description in place of a title. Then provide the name of the magazine in the “Title of container” slot, followed by the date of the issue and the page number on which the advertisement appears:
Advertisement for Head and Shoulders. Newsweek, 17 Mar. 2008, p. 2.
To cite a digital advertisement, provide the URL in place of a page number. If the advertisement is a pop-up ad, provide this information in the optional-element slot at the end of the entry.
“Get the Best of The New Yorker.” The New Yorker, 10 Jan. 2017, www.newyorker.com. Pop-up ad.