Bierman, Harold
The Free Press, 1980
Buku Teks
Stone, Florence M.
[American Management Association, ], 2003
eBooks
Capezio, Peter J., 1947-
McGraw-Hill, 2010
Buku Teks
Koehle, Deborah
[American Society for Training and Development Press, American Society for Training and Development Press], 2001
eBooks
Chevalier, Roger
American Management Association, 2007
eBooks