Murphy, Margaret, author
American Society for Training & Development, 2008
eBooks
Dreamt Entertainment, 2014
Multimedia
Levithan, David, author
PT. Gramedia Pustaka Utama, 2018
Buku Teks
Hirooka, Kyushi, author
PT Elex Media Komputindo, 2019
Buku Teks
Iggers, Jeremy
Westview Press, 1998
Buku Teks