APA (7th ed.) Citation

American Society of Agronomy, Soil Science Society of America, & Kral. (1982). SOIL erosion and conservation in the tropics: Proceedings of a symposium. American Society of Agronomy: : Soil Science Society of America.

Chicago Style (17th ed.) Citation

American Society of Agronomy, Soil Science Society of America, and Kral. SOIL Erosion and Conservation in the Tropics: Proceedings of a Symposium. Madison, Wis.: American Society of Agronomy: : Soil Science Society of America, 1982.

MLA (9th ed.) Citation

American Society of Agronomy, et al. SOIL Erosion and Conservation in the Tropics: Proceedings of a Symposium. American Society of Agronomy: : Soil Science Society of America, 1982.