Weiss, Alan, author
John Wiley & Sons, 2009
Buku Referensi
Silberman, Mel, author
McGraw-Hill, 2001
Buku Teks
Scott, Beverly, author
American Society for Training & Development, 2011
eBooks
Phillips, Jack J., author
[American Society for Training & Development Press;, ], 2000
eBooks
Siregar, Aria Arayana Parasian, author
Fakultas Psikologi Universitas Indonesia, 2005
UI - Tesis (Membership)