APA (7th ed.) Citation

Pieters, A. J. (1920). Alsike clover. U.S. Dept. of Agriculture.

Chicago Style (17th ed.) Citation

Pieters, A. J. Alsike Clover. Washington, D.C: U.S. Dept. of Agriculture, 1920.

MLA (9th ed.) Citation

Pieters, A. J. Alsike Clover. U.S. Dept. of Agriculture, 1920.