Cita APA (7a ed.)

American Society of Agronomy. (1980). Crops and soils: Agronomy for practicing professionals. American Society of Agronomy.

Cita Chicago Style (17a ed.)

American Society of Agronomy. Crops and Soils: Agronomy for Practicing Professionals. Madison: American Society of Agronomy, 1980.

Cita MLA (8a ed.)

American Society of Agronomy. Crops and Soils: Agronomy for Practicing Professionals. American Society of Agronomy, 1980.