APA (7th ed.) Citation

United States. Bureau of Plant Industry & Piper, C. V. (1909). Bur clover. [publisher not identified].

Chicago Style (17th ed.) Citation

United States. Bureau of Plant Industry and C. V. Piper. Bur Clover. Washington, D.C.: [publisher not identified], 1909.

MLA (9th ed.) Citation

United States. Bureau of Plant Industry and C. V. Piper. Bur Clover. [publisher not identified], 1909.