APA (7e ed.) Bronvermelding

National Geographic Society. (1960). Wild animals of North America. National Geographic Society.

Chicago (17e ed.) Bronvermelding

National Geographic Society. Wild Animals of North America. Washington: National Geographic Society, 1960.

MLA (9e ed.) Bronvermelding

National Geographic Society. Wild Animals of North America. National Geographic Society, 1960.

Let op: Deze citaties zijn niet altijd 100% accuraat.