edited by Joseph Seibert & Gorden [i.e. Gordon] Wills
Penguin Books, 1970
Buku Referensi
Aaker, David A.
John Wiley & Sons, 1995
Buku Teks
Churchill, Gilbert A.
Thomson, 2005
Buku Teks
Cooper, Donald R.
McGraw-Hill/Irwin, 2006
Buku Teks
by David A. Aaker ... [and others]
John Wiley & Sons, 2013
Buku Teks