ASTD Research Study
American Management Association, 2009
eBooks
Kuzmits, Frank E., author
Dow Jones-Irwin, 1984
Buku Teks
Susskind, Lawrence E., author
Oxford University Press, 2015
Buku Teks
Bellman, Geoffrey M., author
[American Society for Training and Development Press, American Society for Training and Development Press], 2000
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Thach, Elizabeth C., author
[American Society for Training & Development Press, American Society for Training & Development Press], 2001
eBooks