Evans, Christina
Butterworth, [date of publication not identified]
Buku Teks
Verardo, Denzil, author
[American Society for Training and Development Press, American Society for Training and Development Press], 1999
eBooks
Pearlson, Keri E., author
John Wiley & Sons, 2004
Buku Teks
edited by Michael L. Tushman, Philip Anderson
Oxford University Press, 1997
Buku Teks
Gay, Charles L., author
Nicholas Brealey Pub, 2000
Buku Teks