Koh, E.K., author
Continental Press, 1988
Buku Teks
edited by Malcolm Warner
Business Press, 2000
Buku Referensi
Scott, John, author
Spere British Institute of Management, 1984
Buku Teks
Thompson, Connie, author
[American Society for Training and Development Press;, ], 1998
eBooks
Grosse, Eric F., author
[American Society for Training & Development Press, American Society for Training & Development Press], 2002
eBooks