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