APA استشهاد

Roll, E. (1993). History of economic thought (5.). Rupa Company.

استشهاد بنمط شيكاغو

Roll, Emic. History of Economic Thought. 5. New Delhi: Rupa Company, 1993.

MLA استشهاد

Roll, Emic. History of Economic Thought. 5. Rupa Company, 1993.