Mathur, Shiv S.
Butterworth-Heinemann, 2001
Buku Teks
Brown, Stanley A.
Prentice-Hall, 1990
Buku Teks
Albro, Sandra L.
Island Press, 2019
eBooks
Fletcher, Gordon
Routledge, 2022
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Kamin, Maxine
American Society for Training & Development, 2010
eBooks