Frankel, J. (1988). International relations in a changing world (4th ed.). Oxford University Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रFrankel, Joseph. International Relations in a Changing World. 4th ed. Oxford ; New York: Oxford University Press, 1988.
एमएलए (8वां संस्करण) प्रशस्ति पत्रFrankel, Joseph. International Relations in a Changing World. 4th ed. Oxford University Press, 1988.
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