IRRI. (1978). Nitrogen and rice symposium: Role of nitrogen in rice production, nitrogen transformation in rice soils, 18-21 Sept. 1978. Philippines: IRRI.
استشهاد بنمط شيكاغوIRRI. Nitrogen and Rice Symposium: Role of Nitrogen in Rice Production, Nitrogen Transformation in Rice Soils, 18-21 Sept. 1978. Philippines: IRRI, 1978.
MLA استشهادIRRI. Nitrogen and Rice Symposium: Role of Nitrogen in Rice Production, Nitrogen Transformation in Rice Soils, 18-21 Sept. 1978. Philippines: IRRI, 1978.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.