APA (7th ed.) Citation
Valera, A., Cablayan, D., & Elegado, J. (1989). Proposed guidelines for the management and operation of irrigation systems with diversified cropping.
Chicago Style (17th ed.) Citation
Valera, A., D. Cablayan, and J.A.B Elegado. Proposed Guidelines for the Management and Operation of Irrigation Systems with Diversified Cropping. 1989.
MLA (9th ed.) Citation
Valera, A., et al. Proposed Guidelines for the Management and Operation of Irrigation Systems with Diversified Cropping. 1989.
Warning: These citations may not always be 100% accurate.