Cita APA

Two international symposia of American Society of Agronomy San Antonio, T. a. D., American Society of Agronomy. Division A-6, Ragland, J., & Lal, R. (1993). Technologies for sustainable agriculture in the tropics. Volume 56. Madison, Wisconsin: American Society of Agronomy ; Crop Science Society of America ; Soil Science Society of America.

Citación estilo Chicago

Two international symposia of American Society of Agronomy San Antonio, Texas and Denver, American Society of Agronomy. Division A-6, John Ragland, y Rattan Lal. Technologies for Sustainable Agriculture in the Tropics. Volume 56. Madison, Wisconsin: American Society of Agronomy ; Crop Science Society of America ; Soil Science Society of America, 1993.

Cita MLA

Two international symposia of American Society of Agronomy San Antonio, Texas and Denver, American Society of Agronomy. Division A-6, John Ragland, y Rattan Lal. Technologies for Sustainable Agriculture in the Tropics. Volume 56. Madison, Wisconsin: American Society of Agronomy ; Crop Science Society of America ; Soil Science Society of America, 1993.