Jaffe, C. I. (2013). Public speaking: Concepts and skills for a diverse society (7th ed.). Wadsworth Pub.
Lua i Stíl Chicago (17ú heag.)Jaffe, Clella Iles. Public Speaking: Concepts and Skills for a Diverse Society. 7th ed. Boston, Mass: Wadsworth Pub, 2013.
Lua MLA (9ú heag.)Jaffe, Clella Iles. Public Speaking: Concepts and Skills for a Diverse Society. 7th ed. Wadsworth Pub, 2013.
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