Mathur, Shiv S.
Butterworth-Heinemann, 2001
Buku Teks
Roebuck, Deborah Britt
Business Expert Press, 2012
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Eyre, Vivian
Learning Express, 2000
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Fletcher, Gordon
Routledge, 2022
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Greeno, Nathan J.
American Society for Training & Development, 2006
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