APA (7th ed.) Citation

United States. Bureau of Biological Survey. (1940). The Status of Migratory Birds: 1939-40, June 1940. [s.n.].

Chicago Style (17th ed.) Citation

United States. Bureau of Biological Survey. The Status of Migratory Birds: 1939-40, June 1940. [Washington]: [s.n.], 1940.

MLA (9th ed.) Citation

United States. Bureau of Biological Survey. The Status of Migratory Birds: 1939-40, June 1940. [s.n.], 1940.

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