APA (7 वां संस्करण) प्रशस्ति पत्र
Gries, P. H. (2014). The politics of American foreign policy: How ideology divides liberals and conservatives over foreign affairs. Stanford University Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र
Gries, Peter Hays. The Politics of American Foreign Policy: How Ideology Divides Liberals and Conservatives over Foreign Affairs. Stanford, California: Stanford University Press, 2014.
एमएलए (9वां संस्करण) प्रशस्ति पत्र
Gries, Peter Hays. The Politics of American Foreign Policy: How Ideology Divides Liberals and Conservatives over Foreign Affairs. Stanford University Press, 2014.
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