Mancuso, Joseph, author
Simon & Schuster , 1993
Buku Teks
Bernthal, Paul R., author
[American Society for Training and Development Press;, ], 2004
eBooks
McGraw-Hill, 2003
Buku Teks
Hanan, Mack
Prentice-Hall, 1983
Buku Teks
Lexis Nexis, 2009
Buku Teks