Majors, Randall E., author
Prentice-Hall, 1997
Buku Teks
Lucas, Robert W., author
American Society for Training and Development, 2010
eBooks
Lucas, Robert W., author
ASTD Press, 2010
Buku Teks
Spitzer, Dean, author
[American Society for Training & Development Press, American Society for Training & Development Press], 2003
eBooks
Lucas, Bob, author
American Management Association, 2008
eBooks