APA-referens (7:e uppl.)

Hedgepeth William, Al, C., & Findley John Drawings by. (1978). The hog book. Dolphin Books.

Chicago-referens (17:e uppl.)

Hedgepeth William, Clayton Al, och Findley John Drawings by. The Hog Book. New York: Dolphin Books, 1978.

MLA-referens (9:e uppl.)

Hedgepeth William, et al. The Hog Book. Dolphin Books, 1978.