Lawler, Edward E.
JOSSEY - BASS, 2008
Buku Teks
Liker, Jeffrey K.
McGraw-Hill, 2007
Buku Teks
Barner, Robert
American Management Association;;, 2006
eBooks
Ali Baziad
Yayasan Bina Pustaka Sarwono Prawirohardjo, 2002
Buku Teks
Branham, Leigh
[American Management Association, ], 2001
eBooks