Brusino, Justin, author
American Society for Training & Development, 2008
eBooks
Microsoft, 1988
Buku Teks
Wong, William, author
Prentice-Hall, 1990
Buku Teks
Ritchie, John C., author
Prentice-Hall, 2002
Buku Teks
Rahmat Andriansyah, author
Fakultas Psikologi Universitas Indonesia, 2014
UI - Tesis Membership