Zarefsky, D. (1996). Public speaking: Strategies for success. Allyn and Bacon.
Lua i Stíl Chicago (17ú heag.)Zarefsky, David. Public Speaking: Strategies for Success. Boston: Allyn and Bacon, 1996.
Lua MLA (9ú heag.)Zarefsky, David. Public Speaking: Strategies for Success. Allyn and Bacon, 1996.
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