Mahoney, Thomas A., author
Prentice-Hall, 1961
Buku Teks
Bernard, Chester I., author
Harvard University Press , 1966
Buku Teks
Albers, Henry, author
Wiley, 1974
Buku Teks
editor Wei Xiao
Shenyang Chubanche, 2002
Buku Referensi
David, Mark, author
[American Society for Training & Development Press, American Society for Training & Development Press], 2002
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