APA (7th ed.) Citation

United States. Bureau of Biological Survey. (1938). Early winter food of ruffed grouse on George Washington National Forest. [s.n.].

Chicago Style (17th ed.) Citation

United States. Bureau of Biological Survey. Early Winter Food of Ruffed Grouse on George Washington National Forest. [Washington]: [s.n.], 1938.

MLA (9th ed.) Citation

United States. Bureau of Biological Survey. Early Winter Food of Ruffed Grouse on George Washington National Forest. [s.n.], 1938.

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