Tyson, K. W. (1997). Competition in the 21st century. St. Lucie Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रTyson, Kirk W.M. Competition in the 21st Century. Delray Beach, FL: St. Lucie Press, 1997.
एमएलए (9वां संस्करण) प्रशस्ति पत्रTyson, Kirk W.M. Competition in the 21st Century. St. Lucie Press, 1997.
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