Blowfield, Michael, author
Oxford University Press, 2013
Buku Teks
Kotler, Philip, author
John Wiley & Sons (Asia), 2000
Buku Teks
Kotler, Philip, author
Salemba Empat , 2001
Buku Teks
Kotler, Philip, author
John Wiley & Sons, 2000
Buku Teks
Griffin, Ricky W., author
Prentice-Hall, 2002
Buku Teks