Winardi, author
KIecana, 2006
Buku Teks
J. Winardi, author
Kencana Prenada Media Group, 2010
Buku Teks
Cowan, Stella Louise, author
[American Society for Training & Development Press, American Society for Training & Development Press], 2001
eBooks
Robbins, Stephen P., author
Prentice-Hall, 2002
Buku Teks
Robbins, Stephen P., author
Prentice-Hall, 1997
Buku Teks