Cita APA

Tyrrell, E. Q., & Tyrrell, R. A. (1985). Hummingbirds: Their life and behavior : a photographic study of the North American Species. New York: Crown.

Citación estilo Chicago

Tyrrell, Esther Quesada, y Robert A. Tyrrell. Hummingbirds: Their Life and Behavior : A Photographic Study of the North American Species. New York: Crown, 1985.

Cita MLA

Tyrrell, Esther Quesada, y Robert A. Tyrrell. Hummingbirds: Their Life and Behavior : A Photographic Study of the North American Species. New York: Crown, 1985.