APA (7th ed.) Citation

Herren, R. V. (2012). The science of agriculture: A biological approach (4th ed.). Delmar, Cengage Learning.

Chicago Style (17th ed.) Citation

Herren, Ray V. The Science of Agriculture: A Biological Approach. 4th ed. Clifton Park, New York: Delmar, Cengage Learning, 2012.

MLA (9th ed.) Citation

Herren, Ray V. The Science of Agriculture: A Biological Approach. 4th ed. Delmar, Cengage Learning, 2012.