APA (7th ed.) Citation

United States. Bureau of Biological Survey. (1937). Some accomplishments of the cooperative research units, a summary to Jan. 31, 1937. [s.n.].

Chicago Style (17th ed.) Citation

United States. Bureau of Biological Survey. Some Accomplishments of the Cooperative Research Units, a Summary to Jan. 31, 1937. [Washington]: [s.n.], 1937.

MLA (9th ed.) Citation

United States. Bureau of Biological Survey. Some Accomplishments of the Cooperative Research Units, a Summary to Jan. 31, 1937. [s.n.], 1937.