Kim, Bung Hee, author
Godong Che, 2008
Buku Teks
Horton, William, author
American Society for Training & Development Press, 2001
eBooks
Bates, Tony, 1939-, author
Routledge, 2005
Buku Teks
Lee, Yun Jung, author
Salleem, 2009
Buku Teks
Kime, Robert E.
Prentice-Hall, 1977
Buku Teks