Olson, W. C. (1987). The Theory and practice of international relations (8th ed.). Prentice-Hall.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रOlson, William C. The Theory and Practice of International Relations. 8th ed. Englewood Cliffs, N.J: Prentice-Hall, 1987.
एमएलए (9वां संस्करण) प्रशस्ति पत्रOlson, William C. The Theory and Practice of International Relations. 8th ed. Prentice-Hall, 1987.
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