APA (7th ed.) Citation

Não informado. (1971). American birds. National Audubon Society.

Chicago Style (17th ed.) Citation

Não informado. American Birds. New York: National Audubon Society, 1971.

MLA (8th ed.) Citation

Não informado. American Birds. National Audubon Society, 1971.

Warning: These citations may not always be 100% accurate.