Brecht,Arnold. (1959). Political theory: The foundations of twentieth-century political thought. Princeton University Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रBrecht,Arnold. Political Theory: The Foundations of Twentieth-century Political Thought. Princeton University Press, 1959.
एमएलए (9वां संस्करण) प्रशस्ति पत्रBrecht,Arnold. Political Theory: The Foundations of Twentieth-century Political Thought. Princeton University Press, 1959.
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