edited by J.E. Rijnsdorp
Pergamon Press, 1979
Buku Teks
Levin, Howard S., author
John Wiley & Sons, 1956
Buku Teks
McClure, Carma L., author
Prentice-Hall, 1989
Buku Teks
McClure, Carma L., author
Prentice-Hall, 1989
Buku Teks
Phillips, Jack J., author
American Society for Training and Development Press;, 2005
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