Udvardy, M. D. F., Farrand, J., & Udvardy, M. D. F. (1994). National Audubon Society field guide to North American birds (Rev. ed.). Knopf : Distributed by Random House.
Style de citation Chicago (17e éd.)Udvardy, Miklos D. F., John Farrand, et Miklos D. F. Udvardy. National Audubon Society Field Guide to North American Birds. Rev. ed. New York: Knopf : Distributed by Random House, 1994.
Style de citation MLA (8e éd.)Udvardy, Miklos D. F., et al. National Audubon Society Field Guide to North American Birds. Rev. ed. Knopf : Distributed by Random House, 1994.
Attention : ces citations peuvent ne pas être correctes à 100%.