Desjardins, Joseph, author
McGraw-Hill, 2003
Buku Teks
George, Richard T.
Pearson, 2005
Multimedia
New York, N.Y. , Prentice Hall 1994
Buku Teks
Harvard Business School Press, 2003
Buku Teks
Lisa H Newton, Elaine E. Englehardt, Michael S. Pitchard, editor
McGraw-Hill, 2012
Buku Teks