Rybold, G. (2006). Speaking, listening and understanding: Debate for non-native-English speakers. International Debate Education Association.
Citace podle Chicago (17th ed.)Rybold, Gary. Speaking, Listening and Understanding: Debate for Non-native-English Speakers. New York, NY: International Debate Education Association, 2006.
Citace podle MLA (9th ed.)Rybold, Gary. Speaking, Listening and Understanding: Debate for Non-native-English Speakers. International Debate Education Association, 2006.
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