Quible, Zone K.
Business Communication
Prentice Hall International,inc, 1996
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Ewald, Helen Rothschild
Business communication
Prentice-Hall International, 1997
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Krizan, A.C.
Business communication
Thomson, 2008
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Ewald, Helen Rothschild
Business communication
Prentice-Hall International, 1997
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Boone, Louis E.
Contemporary business communication
Prentice-Hall, 1997
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