Kuper, L. (1977). Pity of it all: Polarisation of racial and ethnic relations. University of Minnesota Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रKuper, Leo. Pity of It All: Polarisation of Racial and Ethnic Relations. University of Minnesota Press, 1977.
एमएलए (9वां संस्करण) प्रशस्ति पत्रKuper, Leo. Pity of It All: Polarisation of Racial and Ethnic Relations. University of Minnesota Press, 1977.
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