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Macmillan, 1974
Buku Teks
Brannick, Michael T., author
Sage Publication, , 2002
Buku Teks
editor, Cat Sharpe
[American Society for Training and Development Press, American Society for Training and Development Press], 1998
eBooks
Baskoro Gautama, author
Fakultas Eknonomi dan Bisnis Universitas Indonesia, 2018
UI - Tesis (Membership)
Fitz-enz, Jac, author
McGraw-Hill , 1984
Buku Teks