Watson, J. L. (1980). Asian and African Systems of Slavery. University of California Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रWatson, James L. Asian and African Systems of Slavery. University of California Press, 1980.
एमएलए (9वां संस्करण) प्रशस्ति पत्रWatson, James L. Asian and African Systems of Slavery. University of California Press, 1980.
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