APA (7th ed.) Citation

Wildermuth, V. L. (1920). The alfalfa caterpillar. U.S. Dept. of Agriculture.

Chicago Style (17th ed.) Citation

Wildermuth, Vernon L. The Alfalfa Caterpillar. Washington, D.C: U.S. Dept. of Agriculture, 1920.

MLA (9th ed.) Citation

Wildermuth, Vernon L. The Alfalfa Caterpillar. U.S. Dept. of Agriculture, 1920.