Lawson, R.G.
Business law : a complete guide for students of business and marketing
Butterworth-Heinemann, 1992
 Buku Referensi
Morse, Stephen A.
The art of marketing : successfull product management; Vol.5 : a guide to strategy, planning and development
Crest Publishing House, 2001
 Buku Teks
Brierty, Edward G.
Business marketing
Prentice-Hall, 1998
 Buku Teks
Bingham, Frank G.
Business marketing
NTC/Contemporary Publishing Group, 2001
 Buku Teks
Morris, Michael H.
Business marketing
Sage, 2001
 Buku Teks