Russell, S. M. (1996). Anna's hummingbird: Calypte anna. American Ornithologists' Union ; The Academy of Natural Sciences.
Chicago Style (17th ed.) CitationRussell, Stephen Mims. Anna's Hummingbird: Calypte Anna. Washington, D.C. : Philadelphia, PA: American Ornithologists' Union ; The Academy of Natural Sciences, 1996.
MLA (9th ed.) CitationRussell, Stephen Mims. Anna's Hummingbird: Calypte Anna. American Ornithologists' Union ; The Academy of Natural Sciences, 1996.
Warning: These citations may not always be 100% accurate.