Kupperman, J. (2007). Ethics and qualities of life. Oxford University Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रKupperman, Joel. Ethics and Qualities of Life. New York: Oxford University Press, 2007.
एमएलए (8वां संस्करण) प्रशस्ति पत्रKupperman, Joel. Ethics and Qualities of Life. Oxford University Press, 2007.
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