Wiley, 1995
Buku Teks
Wilson, Lee, author
Allworth Press, 1990
Buku Teks
Hanna, Thomas M., author
American Management Association, 2007
eBooks
Ward, Francine, author
American Society for Training & Development, 2007
eBooks
Beatty, Jeffrey F., author
South Western Cengage Learning, 2011
Buku Teks