Deeprose, Donna, author
American Management Association;, 2006
eBooks
Vernon, Alexia, author
American Society for Training & Development, 2012
eBooks
Nelson, Bob, author
Workman Publishing Company, 1994
Buku Teks
Baldoni, John, 1952-
American Management Association;, 2009
eBooks
Nelson, Bob, author
Pustaka Delapratasa, 1999
Buku Teks