Bibby, N. (2014). Discovering the world through debate: A practical guide to educational debate for debaters, coaches, and judges (Fourth edition.). International Debate Education Association.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रBibby, Nick. Discovering the World Through Debate: A Practical Guide to Educational Debate for Debaters, Coaches, and Judges. Fourth edition. New York: International Debate Education Association, 2014.
एमएलए (9वां संस्करण) प्रशस्ति पत्रBibby, Nick. Discovering the World Through Debate: A Practical Guide to Educational Debate for Debaters, Coaches, and Judges. Fourth edition. International Debate Education Association, 2014.
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