IRRI. (1989). Rice farming systems new directions. Manila: IRRI.
Trích dẫn kiểu ChicagoIRRI. Rice Farming Systems New Directions. Manila: IRRI, 1989.
MLA引文IRRI. Rice Farming Systems New Directions. Manila: IRRI, 1989.
警告：这些引文格式不一定是100％准确.
APA引文