APA (7th ed.) Citation

Pyle, R. M. (1984). The Audubon Society handbook for butterfly watchers. Scribner's.

Chicago Style (17th ed.) Citation

Pyle, Robert Michael. The Audubon Society Handbook for Butterfly Watchers. New York: Scribner's, 1984.

MLA (9th ed.) Citation

Pyle, Robert Michael. The Audubon Society Handbook for Butterfly Watchers. Scribner's, 1984.

Warning: These citations may not always be 100% accurate.