Krieger, L. (1972). The German idea of freedom: History of political tradition. University of Chicago Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रKrieger, Leonard. The German Idea of Freedom: History of Political Tradition. University of Chicago Press, 1972.
एमएलए (9वां संस्करण) प्रशस्ति पत्रKrieger, Leonard. The German Idea of Freedom: History of Political Tradition. University of Chicago Press, 1972.
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