APA استشهاد

Roll, E. (1973). History of Economic Thought (4th ed.). Faber and Faber.

استشهاد بنمط شيكاغو

Roll, Eric. History of Economic Thought. 4th ed. London: Faber and Faber, 1973.

MLA استشهاد

Roll, Eric. History of Economic Thought. 4th ed. Faber and Faber, 1973.