Huber, R. B., & Snider, A. (2005). Influencing through argument (Updated ed.). International Debate Education Association.
Lua i Stíl Chicago (17ú heag.)Huber, Robert B., agus Alfred Snider. Influencing Through Argument. Updated ed. New York: International Debate Education Association, 2005.
Lua MLA (9ú heag.)Huber, Robert B., agus Alfred Snider. Influencing Through Argument. Updated ed. International Debate Education Association, 2005.
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