Artikel Jurnal
Phillips, Jack J., author
American Society for Training & Development, 2008
eBooks
Plattner, Francis, author
[American Society for Training and Development Press, American Society for Training and Development Press], 2001
eBooks
Davies, Ivor K., author
McGraw-Hill, 1973
Buku Teks
Janssen, Roger
KITLV Press, 2011
Multimedia