APA (7e ed.) Bronvermelding

National Geographic Society (U.S.). (1987). Field guide to the birds of North America (2nd ed.). National Geographic Society.

Chicago (17e ed.) Bronvermelding

National Geographic Society (U.S.). Field Guide to the Birds of North America. 2nd ed. Washington, D.C: National Geographic Society, 1987.

MLA (9e ed.) Bronvermelding

National Geographic Society (U.S.). Field Guide to the Birds of North America. 2nd ed. National Geographic Society, 1987.