Ambrose, Timothy
Routledge, 1995
Buku Teks SO
Donatelle, Rebecca J.
Allyn and Bacon , 1997
Buku Teks SO
Macionis, John J.
Prentice-Hall, 2000
Buku Teks
Willmore, Joe
[American Society for Training and Development Press;, ], 2004
eBooks
McCain, Donald V.
[American Society for Training and Development Press;, ], 2004
eBooks