Follow the basic form at of that as a book. Though pay attention to the special cases as noted below. See Section 5.5.12 of the MLA Handbook for Writers of Research Papers for more information.
Basic Format: Author’s last name, first name. Title of work. Publication city: Publisher, year. Medium of publication.
Author as Artist/Illustrator
In a graphic novel, text and illustrations are intermingled. The entry in the works-cited list for a graphic novel entirely created by one person follows the same format as any other non-periodical print publication
Example : Barry, Lynda. What It Is. Montreal: Drawn & Quarterly, 2008. Print.
Collaborative Works (different author, artistist/illustrator)
For graphic novels created through collaboration, start with the person whose contribution is most relevant to your research, following it with a label identifying the person’s role. List other collaborators after the title in the order in which they appear on the title page, also with labels identifying their roles.
Example: Pekar, Harvey, writer. The Quitter. Art by Dean Haspiel. Gray tones by Lee Loughridge. Letters by Pat Brosseau. New York: Vertigo-DC Comics, 2005. Print.
Example: Robertson, David. 7 Generations : A Plains Cree Saga. Illus. Scott B. Henderson. Winnipeg: HighWater Press, 2012. Print.
(Illus is the abbreviation for illustrator)
If the graphic novel is part of a multi-volume work, you may add information about the series following the medium of publication.
Example: Miller, Frank. Just Another Saturday Night. Milwaukie, OR: Dark Horse Books, 2005. Print. Vol. 6 of Frank Miller’s Sin City: Booze, Broads, & Bullets.
Content adapted from http://www.comicsresearch.org/CAC/cite.html
Lastname, Firstname. “Name of comic.” Comic Strip. Source of Comic. Date comic published. Print.
Gross, Sam. Cartoon. New Yorker 23 May 2011: 28. Print.
Comic Strip Example
McDonnell, Patrick. "Mutts." Comic strip. San Francisco Chronicle 25 June 2011: E7. Print.
Krahulik, Mike and Jerry Holkins. “Penny Arcade.” Web Comic. Penny-arcade.com 28 Jan. 2011. Web. 15 Feb. 2011.