Franklin, Maren, author
American Society for Training and Development Press, 2005
eBooks
Thomson, George F., author
Institute of Personeel Management, 1975
Buku Teks
Jerrard, Jane, author
American Management Association, 2009
eBooks
Stroh, David Peter, 1950-, author
Chelsea Green Publishing, 2015
Buku Teks
Keeley, Joseph C., author
McGraw-Hill Book Company, Inc. , 1950
Buku Teks