APA (7 वां संस्करण) प्रशस्ति पत्र

Beck, R. C. (2000). Motivation: Theories and principles (4th ed.). Prentice Hall.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

Beck, Robert C. Motivation: Theories and Principles. 4th ed. Upper Saddle River, N.J: Prentice Hall, 2000.

एमएलए (9वां संस्करण) प्रशस्ति पत्र

Beck, Robert C. Motivation: Theories and Principles. 4th ed. Prentice Hall, 2000.