Okun, Barbara F., author
Cengage Learning, 2015
Buku Teks
Sullivan, Rick, author
[American Society for Training & Development Press, American Society for Training & Development Press], 2005
eBooks
Kreitzberg, Charles B., author
Harcourt Brace Jovanovich, 1972
Buku Teks
Sommers-Flanagan, John, author
John Wiley & Sons, 2012
Buku Teks
Miller, Emmett E., author
E. Miller; S. Halpern, 1980
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