Mortensen, Kurt W., author
American Management Association, 2011
eBooks
Denning, Melita
Llewellyn Publications, 1993
Buku Teks
Swartz, Greg, author
American Society for Training & Development, 2008
eBooks
Mortensen, Kurt W., author
American Management Association, 2013
eBooks
Putu Putrayasa
Gramedia, 2004
Buku Teks