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.
Format:
Author's Last Name, First Name. Title of Book. Publisher, Publication Year.
Example:
Barry, Lynda. What It Is. Drawn & Quarterly, 2008.
**If the graphic novel is part of a multi-volume work, include the volume number after the work's title, or after the work's editor, illustrator, or translator.
**If the graphic novel is part of a multi-volume work, you may add information about the series following the medium of publication.
Example - Multi-volume Work:
Fialkov, Joshua H. The Bunker. Illustrated by Joe Infurnari, vol. 2, Oni Press, 2015.
**If the volume you are using has its own title, cite the book without referring to the other volumes as if it were an independent publication.
Example - Multivolume Work, Each Volume with Its Own Title:
Miller, Frank. Just Another Saturday Night. Dark Horse Books, 2005.
http://elmo.academyart.edu/reference-help/mla_citation_guide.html#graphic