APA (7th ed.) Citation

Kalmbach, E. R. (1939). The crow in its relation to agriculture: Is it a farm pest? (Issued August, 1920; revised June 1939.). U.S. Dept. of Agriculture.

Chicago Style (17th ed.) Citation

Kalmbach, E. R. The Crow in Its Relation to Agriculture: Is It a Farm Pest? Issued August, 1920; revised June 1939. Washington, D.C.: U.S. Dept. of Agriculture, 1939.

MLA (9th ed.) Citation

Kalmbach, E. R. The Crow in Its Relation to Agriculture: Is It a Farm Pest? Issued August, 1920; revised June 1939. U.S. Dept. of Agriculture, 1939.