Johnson, L. K. (1991). America as a world power: Foreign policy in a constitutional framework. McGraw-Hill.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रJohnson, Loch K. America as a World Power: Foreign Policy in a Constitutional Framework. New York: McGraw-Hill, 1991.
एमएलए (9वां संस्करण) प्रशस्ति पत्रJohnson, Loch K. America as a World Power: Foreign Policy in a Constitutional Framework. McGraw-Hill, 1991.
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