IRRI. (1990). Performance objectives manual (Training and technology transfer course). Philippines: IRRI.
استشهاد بنمط شيكاغوIRRI. Performance Objectives Manual (Training and Technology Transfer Course). Philippines: IRRI, 1990.
MLA استشهادIRRI. Performance Objectives Manual (Training and Technology Transfer Course). Philippines: IRRI, 1990.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.