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शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रInternational Society for the Study of European Ideas. History of European Ideas. Oxford, Inglaterra: Pergamon Press, 1980.
एमएलए (8वां संस्करण) प्रशस्ति पत्रInternational Society for the Study of European Ideas. History of European Ideas. Pergamon Press, 1980.
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