Robertson,C A. (1971). Introduction to agricultural production economics and farm management. Tata McGraw Hill.
استشهاد بنمط شيكاغوRobertson,C A. Introduction to Agricultural Production Economics and Farm Management. New Delhi: Tata McGraw Hill, 1971.
MLA استشهادRobertson,C A. Introduction to Agricultural Production Economics and Farm Management. Tata McGraw Hill, 1971.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.