Ismail, salim, author
Diversionbooks, 2014
Buku Teks
Lykins, Lorrie, author
American Society for Training & Development, 2011
eBooks
Painter, Lynn, author
Simon & Schuster BFYR, 2021
Buku Teks
Rosling, Hans, author
Gramedia Pustaka Utama , 2019
Buku Teks
Gutsche, Jeremy, 1978-, author
Crown Business, 2015
Buku Teks