This will vary depending on the medium the ad is being delivered. Ads typically aren't properly titled nor is an author made apparent, so your citation will start with a description as a stand-in for those elements.
Advertisement for Head and Shoulders. Newsweek, 17 Mar. 2008, p. 2.
"Get the Best of The New Yorker." The New Yorker, 10 Jan. 2017, www.newyorker.com. Pop-up advertisement.
Martin, George R. R. A Feast for Crows. Narrated by Roy Dotrice, audiobook ed., Random House Audio, 2011.
Sanderson, Brandon. Oathbringer. Narrated by Kate Reading and Michael Kramer, audiobook ed., Macmillan Audio, 2017.
Martin, George R. R. A Feast for Crows. Narrated by Roy Dotrice, audiobook ed., Random House Audio, 2011. CD.
Political, or editorial, cartoons will basically follow a citation for an image, with perhaps a second container depending on where you viewed it. They don't usually have their own titles: instead, you will write a generic description of it, capitalizing the first word and any proper nouns. You may also add a label at the very end of the citation to note the format of this citation.
Varvel, Gary. Cartoon obituary honoring Mohammad Ali as The Greatest. The Indianapolis Star, 2016. USA Today, www.usatoday.com/picture-gallery/opinion/cartoons/2012/11/28/editorial-cartoons-on-pop-culture/1733923.
In this example, the art was produced for the book, rather than being reproduced in the book. The Landacre illustration is not titled in the book, so we write a description of the image instead. Because it's a description and not a formal title, we do not italicize it nor put "quotes" around it.
Landacre, Paul. Illustration of paper birch trees. A Natural History of Trees of Eastern and Central North America, 2nd ed., Houghton Mifflin, p. 164.
Beaton, Kate. "Dude Watchin' With the Brontes." Hark! A Vagrant, www.harkavagrant.com/index.php?id=202. Accessed 28 July 2021.
Weinersmith, Zach. Cartoon. Saturday Morning Breakfast Cereal, 21 Oct. 2012, smbc-comics.com/comic/2012-10-21.
Movie with original release date included along with current release date
Patton. 1970. Directed by Franklin J. Schaffner, 20th Century Fox, 2006.
Desk Set. Directed by Walter Land, 20th Century Fox, 1957. Netflix app.
Richardson, Tony, director. Sanctuary. Screenplay by James Poe, Twentieth Century Fox, 1961. YouTube, uploaded by LostCinemaChannel, 17 July 2014, www.youtube.com/watch?v=IMnzFM_Sq8s.
If you're focusing on the contributions of a specific contributor, place them in the Author slot:
Lang, Walter, director. Desk Set. Twentieth Century Fox, 1957. Netflix app.
Scott, George C., performer. Patton. Directed by Franklin J. Schaffner, Twentieth Century Fox, 2006.
DeMarco, Randi. "Shaboom." Shaboom, 2015. Spotify app.
Odom, Leslie, Jr. "Wait For It." Hamilton (Original Broadway Cast Recording), written by Lin-Manuel Miranda, Atlantic, 2015. CD.
Bowie, David. The Rise and Fall of Ziggy Stardust and the Spiders from Mars. RCA, 1972.
“Harry Styles Carpool Karaoke.” YouTube, uploaded by The Late Late Show with James Corden, 19 May 2017, www.youtube.com/watch?v=JvLLx0cpJVI.
Allende, Isabel. "Tales of Passion." TED, Mar. 2007, www.ted.com/talks/isabel_allende_tells_tales_of_passion?language=en.
Note: The dates given in these examples are for the artwork, even for the art viewed in-person (as opposed to the date of the exhibition or visit).
Tomoo, Inagaki. Pumpkins. 1955. MOMA, www.moma.org/collection/works/60805.
Wyeth, Andrew. Self-Portrait. 1945. Google Arts & Culture, www.google.com/culturalinstitute/beta/asset/self-portrait/bQGXPeyDH80c0Q.
Wyeth, Andrew. Self-Portrait. 1945, National Academy Museum & School, New York.
Wilson, Letha. Headlands Beach Steel Pipe Bend. 2018, GRIMM, New York. Vinyl print and steel sculpture.
Hopper, Edward. Nighthawks. 1942, Art Institute of Chicago. Prebles' Artforms, by Patrick Frank, 11th ed., Pearson, 2014.
Krach, Ken. Moody at the Coast. 5 Aug. 2018. Flickr, flic.kr/p/McuNM2.
Rothstein, Arthur. Winner of Masquerade at Halloween Party. Oct. 1939. Library of Congress, lccn.loc.gov/2017779228.
In the following example, the photo is part of an article/page. Sheldon wrote the article and took the photo. The photo is not officially titled on her page, but the figure it depicts is commonly called The Muleteer. This is a 3-container citation: the photo in the article on the website.
Sheldon, Natasha. Photograph of The Muleteer. "Human Remains in Pompeii: The Body Casts," by Sheldon, 23 Mar. 2014. Decoded Past, decodedpast.com/human-remains-in-pompeii-the-body-casts/.
1300 Block E. Cary Street. ca. 1900. Cook Collection, Valentine Richmond History Center. Right to Ride: Streetcar Boycotts and African American Citizenship in the Era of Plessy v. Ferguson, by Blair M. Kelley, University of North Carolina Press, 2010, pp. 114-5.
12.07.a2 Oakland, CA. Exploring Geology, by Stephen J. Reynolds et al., 5th ed., McGraw-Hill, 2019, p. 342.
Note: The date given is for the photo itself as opposed to the date of the exhibition or visit.
Cameron, Julia Margaret. Alfred, Lord Tennyson. 1866, Metropolitan Museum of Art, New York City.
Fink, Joseph and Jeffrey Cranor. "Summer Reading Program." Welcome to Night Vale, narrated by Cecil Baldwin, episode 28, Night Vale Presents, 1 Aug. 2013, welcometonightvale.com/listen.
Note: if you're watching a recording of a speech/etc, follow the examples for how you viewed it (streaming video, DVD, audio recording, etc).
Roosevelt, Franklin D. "Four Freedoms speech." Annual Message to Congress on the State of the Union, 6 Jan. 1941, United States Capitol, Washington, D.C.
Ford, Jane. Lecture. Introduction to the History of Art, 4 Apr. 2016, Bates College.
"Pie-lette." Pushing Daisies. Created by Brian Fuller, season 1, episode 1, The Jinks/Cohen Company / Living Dead Guy Productions, 2007.
"Everything is Fine." The Good Place, season 1, episode 1, NBC, 2016. Netflix, www.netflix.com.
"Brain Scramblies." What We Do in the Shadows, season 2, episode 3, FXP, 22 Apr. 2020. Hulu, www.hulu.com.
Note: This examples includes the original release year, 1999, in the supplemental element spot after the episode title. Because "fourth season" is included in the container (DVD set) title, we don't need to specify the season in the number element -- just the episode number.
"Hush." 1999. Buffy the Vampire Slayer: The Complete Fourth Season, created by Joss Whedon, episode 10, Mutant Enemy / Twentieth Century Fox, 2003, disc 3. DVD.
Jeopardy! NBC, 7 Nov. 2019.
Jeopardy! Hosted by LeVar Burton, NBC, 27 July 2021.
Fleabag. Created by Phoebe Waller-Bridge, season 2, episode 3, BBC, 18 Mar. 2019.