Kotler, Philip, author
Prentice-Hall, 1989
Buku Teks
Kotler, Philip, author
Pearson Education, 2006
Buku Teks
Chisnall, Peter M
Prentice-Hall, 1989
Buku Teks
Leeflang, P.S.H.
Leiden, Antwerpen , HE Stenfert Kroese B.V., 1981.
Buku Teks
Morse, Stephen A., author
Crest Publishing House, 2001
Buku Teks