Liker, Jeffrey K.
McGraw-Hill, 2007
Buku Teks
Lawler, Edward E.
Jossey-Bass, 2008
Buku Teks
Smucker, Bob
Jossey - Bass Publishers, 1991
Buku Teks
Kornegay, Rebecca S.
[American Management Association, ], 2009
eBooks
Miller, William
American Management Association, 2009
eBooks