Battell, Chris
American Society for Training & Development, 2006
eBooks
Ferrer, Jami
Random House, 1985
Buku Teks SO
Orey, Maureen
American Society for Training and Development Press;, 2004
eBooks
Downs, Lisa J.
American Society for Training & Development, 2009
eBooks
Orey, Maureen
ATD Press, 2015
Buku Teks SO