Mike Millmore, Philip Lewis, Mark Saunders, Adrian Thornhill, Trevor Morrow
Prentice-Hall, 2007
Buku Teks
Aaker, David A., author
John Wiley & Sons, 1998
Buku Teks
Berman, Barry, author
Prentice-Hall, 2010
Buku Teks
Hughes, G. David, author
Addison-Wesley, 1983
Buku Teks
Randall S.Schuler, Susan E.Jackson, editor
Blackwell Publisher, 2000
Buku Teks