Gamble, Teri Kwal
Public speaking
Allyn and Bacon, 1994
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Payne, James
Getting started in public speaking
Illinois National Textbook, 1994
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Lucas, Stephen E.
The art of public speaking
New York : McGraw-Hill, 1995,
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Nicholls, Anne
How to - master public speaking
How to Books, 1993
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Lucas, Stephen E.
The art of public speaking
McGraw-Hill , 2004
 Buku Teks SO