True, D. (1993). Hummingbirds of North America: Attracting, feeding, and photographing. University of New Mexico Press.
Cita Chicago Style (17a ed.)True, Dan. Hummingbirds of North America: Attracting, Feeding, and Photographing. Albuquerque: University of New Mexico Press, 1993.
Cita MLA (8a ed.)True, Dan. Hummingbirds of North America: Attracting, Feeding, and Photographing. University of New Mexico Press, 1993.
Precaución: Estas citas no son 100% exactas.