APA

National Geographic Society. Washington D. C., . (1937). The book of birds. Washginton, D. C: National Geographic Society.

Chicago

National Geographic Society. Washington D C, . 1937. The book of birds. Washginton, D. C: National Geographic Society.

Harvard

National Geographic Society. Washington D. C., . (1937). The book of birds. Washginton, D. C: National Geographic Society.

MLA

National Geographic Society. Washington D C, . The book of birds. Washginton, D. C: National Geographic Society. 1937.