Christopher. Freedom in White and Black. University of Wisconsin Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रChristopher. Freedom in White and Black. University of Wisconsin Press.
एमएलए (8वां संस्करण) प्रशस्ति पत्रChristopher. Freedom in White and Black. University of Wisconsin Press.
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