Cita APA (7a ed.)
Cablayan, D., & Valera, A. (1988). Constraints to irrigated and diversified cropping.
Cita Chicago Style (17a ed.)
Cablayan, D.M, y A.B Valera. Constraints to Irrigated and Diversified Cropping. 1988.
Cita MLA (9a ed.)
Cablayan, D.M, y A.B Valera. Constraints to Irrigated and Diversified Cropping. 1988.
Precaución: Estas citas no son 100% exactas.