APA (7th ed.) Citation

Herren, R. V. (2002). The science of agriculture: A biological approach (2nd ed.). Delmar Thomson Learning.

Chicago Style (17th ed.) Citation

Herren, Ray V. The Science of Agriculture: A Biological Approach. 2nd ed. Albany, N.Y: Delmar Thomson Learning, 2002.

MLA (9th ed.) Citation

Herren, Ray V. The Science of Agriculture: A Biological Approach. 2nd ed. Delmar Thomson Learning, 2002.