APA (7 वां संस्करण) प्रशस्ति पत्र

Roll, E. (1953). A History of economic thought (3rd.ed.). Prentice-Hall.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

Roll, Eric. A History of Economic Thought. 3rd.ed. New Jersey: Prentice-Hall, 1953.

एमएलए (9वां संस्करण) प्रशस्ति पत्र

Roll, Eric. A History of Economic Thought. 3rd.ed. Prentice-Hall, 1953.