APA (7th ed.) Citation

Clark, W. H., & Wheeler, B. K. (1987). A field guide to hawks of North America. Houghton Mifflin.

Chicago Style (17th ed.) Citation

Clark, William H., and Brian K. Wheeler. A Field Guide to Hawks of North America. New York: Houghton Mifflin, 1987.

MLA (9th ed.) Citation

Clark, William H., and Brian K. Wheeler. A Field Guide to Hawks of North America. Houghton Mifflin, 1987.

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