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.
McGonigal, Jane. “Gaming and Productivity.” YouTube, uploaded by Big Think, 3 July 2012, www.youtube.com/watch?v=mkdzy9bWW3E.
“8 Hot Dog Gadgets put to the Test.” YouTube, uploaded by Crazy Russian Hacker, 6 June 2016, www.youtube.com/watch?v=WBlpjSEtELs.