APA

IRRI. International Rice Research Institute . ManilaPH, .Water management in philipine irrigation systems: research and operation. Manila: .

Chicago

IRRI. International Rice Research Institute . ManilaPH, .Water management in philipine irrigation systems: research and operation. Manila: .

Harvard

IRRI. International Rice Research Institute . ManilaPH, .Water management in philipine irrigation systems: research and operation. Manila: .

MLA

IRRI. International Rice Research Institute . ManilaPH, .Manila: . .