APA استشهاد

Roll, E. (1993). History of economic thought (5th rev. ed.). Rupa.

استشهاد بنمط شيكاغو

Roll, Eric. History of Economic Thought. 5th rev. ed. New Delhi: Rupa, 1993.

MLA استشهاد

Roll, Eric. History of Economic Thought. 5th rev. ed. Rupa, 1993.