Plattner, Francis B., author
Improve your communication and speaking skills
American Society for Training and Development Press, 1997
 eBooks
Ellingsworth, Huber W., author
Speech and social action : a strategy of oral communication
Prentice-Hall, 1967
 Buku Teks
O`Connor, J. Regis, author
High-impact public speaking for business and the professions
NTC, 1997
 Buku Teks
Orey, Maureen, author
Communication skills training
American Society for Training and Development Press;, 2004
 eBooks
Andrews, Patricia Hayes, author
Communication for business and the professions
Waveland, 1986
 Buku Teks
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