APA (7th ed.) Citation

Calder, W. A. (1993). Rufous hummingbird: Selasphorus rufus. American Ornithologists' Union ; The Academy of Natural Sciences.

Chicago Style (17th ed.) Citation

Calder, William A. Rufous Hummingbird: Selasphorus Rufus. Washington, D.C. : Philadelphia, PA: American Ornithologists' Union ; The Academy of Natural Sciences, 1993.

MLA (9th ed.) Citation

Calder, William A. Rufous Hummingbird: Selasphorus Rufus. American Ornithologists' Union ; The Academy of Natural Sciences, 1993.

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