Levering, R. B. (1978). The public and American foreign policy, 1918-1978. Published for the Foreign Policy Association by Morrow.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रLevering, Ralph B. The Public and American Foreign Policy, 1918-1978. New York: Published for the Foreign Policy Association by Morrow, 1978.
एमएलए (9वां संस्करण) प्रशस्ति पत्रLevering, Ralph B. The Public and American Foreign Policy, 1918-1978. Published for the Foreign Policy Association by Morrow, 1978.
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