Blankenship, Albert Breneman, 1914-, author
Harper & Brothers publishers, 1946
Buku Teks
editor, Cat Sharpe
American Society for Training and Development Press, 2006
eBooks
Valenti, Diane, author
American Management Association, 2009
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Fakultas Psikologi Universitas Indonesia, 2010
UI - Tesis (Membership)
Kirkpatrick, Donald L., author
American Society for Training & Development, 2006
eBooks