Burrus, Daniel
HarperBusines, 1993
Buku Teks
Fransman, Martin
Cambridge University Press, 1991
Buku Teks
Monk, Keith
McGraw-Hill, 1989
Buku Teks
Fine, Frank L
Sweet & Maxwell, 2006
Buku Teks
Raybould, Barry
[American Society for Training & Development Press;, ], 2001
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