Baker, David, author
Chandos Publishing, 2007
Buku Teks
Vukotich, George, author
American Society for Training & Development, 2011
eBooks
Wright, Peter, author
Prentice-Hall, 1998
Buku Teks
Dess, Gregory G., author
McGraw-Hill/Irwin, 2004
Buku Teks
Dess, Gregory G., author
MCGraw-Hill , 2004
Multimedia