Glover, John Desmond, author
Richard D. Irwin, 1957
Buku Teks
Dent, Janice, author
[American Society for Training and Development Press, American Society for Training and Development Press], 2000
eBooks
Rothwell, William J., 1951-, author
American Society for Training & Development, 2005
eBooks
Ulrich, Dave
McGraw-Hill, 2013
Buku Teks
Price, Alan
International Thomson Business Press , 1997
Buku Teks