APA Citation

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

Chicago Style Citation

Clark, William S., and Brian K. Wheeler. A Field Guide to Hawks: North America. Boston: Houghton Mifflin, 1987.

MLA Citation

Clark, William S., and Brian K. Wheeler. A Field Guide to Hawks: North America. Boston: Houghton Mifflin, 1987.

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