Reitman, Annabelle, author
[American Society for Training & Development Press, American Society for Training & Development Press], 2003
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DuBrin, Andrew J., author
Reston Publishing Company, 1983
Buku Teks
Artikel Jurnal
Johnson, George
Julian Messner, 1969
Buku Teks
Edwards, Kenneth W., author
American Management Association, 2007
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