Whetten, David A., author
Prentice-Hall, 2000
Buku Teks
Dale, Margaret, author
Crest Publishing House, 1999
Buku Teks
Whetten, David A., author
Prentice-Hall, 2005
Buku Teks
Whetten, David A., author
Prentice-Hall, 2007
Buku Teks
Famularo, J.J.
McGraw-Hill, 1961
Buku Teks