Cita APA

Robbins, C. S., Bruun, B., Singer, A., Zim, H. S., & Singer, A. (1983). A guide to field identification birds of North America. New York: Golder Press.

Citación estilo Chicago

Robbins, Chandler S.,, Bertel Bruun, Arthur Singer, Herbert S. Zim, y Arthur Singer. A Guide to Field Identification Birds of North America. New York: Golder Press, 1983.

Cita MLA

Robbins, Chandler S.,, et al. A Guide to Field Identification Birds of North America. New York: Golder Press, 1983.