APA (7 वां संस्करण) प्रशस्ति पत्र

Ubben, G. C., & Hughes, L. W. (1997). The principal: Creative leadership for effective schools (3rd ed.). Allyn & Bacon.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

Ubben, Gerald C., और Larry W. Hughes. The Principal: Creative Leadership for Effective Schools. 3rd ed. Boston: Allyn & Bacon, 1997.

एमएलए (9वां संस्करण) प्रशस्ति पत्र

Ubben, Gerald C., और Larry W. Hughes. The Principal: Creative Leadership for Effective Schools. 3rd ed. Allyn & Bacon, 1997.