Chappel, R.T.
Business communications
Macdonald and Evans, 1976
Buku Teks
Archer, Robert M.
Basic business communications
Prentice-Hall, 1971
Buku Teks
Murphy, Herta A.
Effective business communications
McGraw-Hill , 1984
Buku Teks
Murphy, Herta A.
Effective business communications
McGraw-Hill, 1976
Buku Teks
Siswanto Sutojo
Komunikasi bisnis yang efektif : effective business communications
Damar Mulia Pustaka, 2003
Buku Teks