Jobber, David, author
Prentice-Hall, 2000
Buku Teks
Lambert, Brian W., author
American Society for Training & Development, 2009
eBooks
Miller, William, author
American Management Association, 2009
eBooks
Eades, Keith M., author
Andi, 2005
Buku Teks
Miller, William, author
American Management Association, 2009
eBooks