Kress, George
Prentice-Hall, 1988
Buku Teks
Aaker, David A., author
John Wiley & Sons, 1995
Buku Teks
Churchill, Gilbert A., author
Thomson, 2005
Buku Teks
Cooper, Donald R., author
McGraw-Hill/Irwin, 2006
Buku Teks
by David A. Aaker ... [and others]
John Wiley & Sons, 2013
Buku Teks