Laurel, Deborah Spring, author
American Society for Training & Development, 2008
eBooks
Maxwell, John C., author
Center Stre, 2015
Buku Teks
Maxwell, John C., author
NY : Center Street, 2014
Buku Teks
Wee, Heng Neo, author
Pearson Prentice Hall, 2004
Buku Teks
Heng, Paul, author
Prentice-Hall, 2001
Buku Teks