Newton, Susan, author
Mosby Elsevies, 2009
Buku Teks
Olsen, Kerri S., 1959-, author
Industrial Press , 2012
Buku Teks
Tyson-Howard, Carla, author
Jones & Bartlett Learning, 2016
Buku Teks
Rivera, Ray J., author
American Society for Training & Development, 2007
eBooks
Kogan Page , 1986
Buku Teks