Garczynski, Joyce, author
Chandos Publishing, 2018
Buku Teks
Reitman, Annabelle, author
[American Society for Training & Development Press, American Society for Training & Development Press], 2003
eBooks
Dewey, Barbara I., author
Oryx Press, 1987
Buku Teks
Fenvessy, Stanley J.
Dowjones-Irwin, 1976
Buku Teks
Johnson, George
Julian Messner, 1969
Buku Teks