APA (7th ed.) Citation

West, G. C. (2015). North American hummingbirds: An identification guide. University of New Mexico Press.

Chicago Style (17th ed.) Citation

West, George C. North American Hummingbirds: An Identification Guide. Albuquerque: University of New Mexico Press, 2015.

MLA (9th ed.) Citation

West, George C. North American Hummingbirds: An Identification Guide. University of New Mexico Press, 2015.