Briggs, Leslie J.
Englewood Cliffs , 1981
Buku Teks
Davis, Robert H., author
McGrow-Hill Book, 1974
Buku Teks
Combs, Wendy, author
American Society for Training & Development, 2006
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Hodell, Chuck, author
American Society for Training & Development, 2006
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Hodell, Chuck, author
American Society for Training & Development, 2011
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