Cita APA (7a ed.)
National Audubon Society, BirdLife International, Frances, P., & Burnie, D. (2007). Bird: The definitive visual guide (1st American ed.). DK Pub..
Cita Chicago Style (17a ed.)
National Audubon Society, BirdLife International, Peter Frances, y David Burnie. Bird: The Definitive Visual Guide. 1st American ed. New York: DK Pub., 2007.
Cita MLA (9a ed.)
National Audubon Society, et al. Bird: The Definitive Visual Guide. 1st American ed. DK Pub., 2007.
Precaución: Estas citas no son 100% exactas.