APA (7th ed.) Citation

Gonick, L., & Wheelis, M. (1991). The cartoon guide to genetics (Updated ed.). HarperCollins Publishers.

Chicago Style (17th ed.) Citation

Gonick, Larry, and Mark Wheelis. The Cartoon Guide to Genetics. Updated ed. New York: HarperCollins Publishers, 1991.

MLA (9th ed.) Citation

Gonick, Larry, and Mark Wheelis. The Cartoon Guide to Genetics. Updated ed. HarperCollins Publishers, 1991.