APA (7th ed.) Citation

Whitaker, J. O. (1996). National Audubon Society field guide to North American mammals (Revised edition, second edition, fully revised.). Knopf.

Chicago Style (17th ed.) Citation

Whitaker, John O. National Audubon Society Field Guide to North American Mammals. Revised edition, second edition, fully revised. New York: Knopf, 1996.

MLA (8th ed.) Citation

Whitaker, John O. National Audubon Society Field Guide to North American Mammals. Revised edition, second edition, fully revised. Knopf, 1996.