APA aipamena

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

Chicago Style aipamena

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

MLA aipamena

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

Kontuz: berrikusi erreferentzia hauek erabili aurretik.