Powell, Suzanne K., author
J.B. Lippincott, 1996
Buku Teks
Elashmawi, Farid, author
Gramedia Pustaka Utama, 1996
Buku Teks
Woody, Robert Henley, author
Jossey-Bass, 1989
Buku Teks
Kaleba, Kermit, author
American Society for Training & Development, 2007
eBooks
Larry Israelite, editor
American Society for Training & Development, 2010
eBooks