Downs, Cal W., author
Guilford Press, 2004
Buku Teks
Solomon, Cynthia, author
American Society for Training and Development Press;, 2004
eBooks
by Jennings Ryan & Kolb, Inc. ; edited by Deborah S. Kolb
American Hospital Association, 1996
Buku Teks
Cutforth, Arthur E., author
Gee and Company, 1971
Buku Teks
Schneider, Arnold E., author
McGraw-Hill, 1975
Buku Teks