Levi, Daniel
Sage Publications, 2007
Buku Teks
Weiss, Donald H.
[American Management Association;, ], 1991
eBooks
Rose, Edward, 1946-
American Society for Training & Development Press, 2001
eBooks
Maginn, Michael
McGraw-Hill, 2003
Buku Teks
Wheelan, Susan A.
Sage, 1999
Buku Teks