Dougherty, J. E., & Pfaltzgraff, R. L. (2001). Contending theories of international relations: A comprehensive survey (5th ed.). Longman.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रDougherty, James E., और Robert L. Pfaltzgraff. Contending Theories of International Relations: A Comprehensive Survey. 5th ed. New York: Longman, 2001.
एमएलए (9वां संस्करण) प्रशस्ति पत्रDougherty, James E., और Robert L. Pfaltzgraff. Contending Theories of International Relations: A Comprehensive Survey. 5th ed. Longman, 2001.
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