Andrews, Deborah C.
Business Communication/Deborah C.Andrews
Macmillan Publishing Company, 1988
 Buku Teks
Quible, Zone K.
Business Communication
Prentice Hall International,inc, 1996
 Buku Teks
Quible, Zone K.
Business Communication
Prentice-Hall International, 1996
 Koleksi Publik
Locker, Kitty O., author
Business communicatin
McGraw-Hill, 2007
 Buku Teks
Ewald, Helen Rothschild
Business communication
Prentice-Hall International, 1997
 Buku Teks
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