Waagen, Alice K., author
American Society for Training and Development Press, 2000
eBooks
Perrin, Karen M., author
Jones & Bartlett Learning, 2016
Buku Teks
Mize, Joe H., author
Prentice-Hall, 1968
Buku Teks
Bodie, Zvi, author
Irwin McGraw-Hill , 1998
Buku Teks
Messenger, William E., author
Prentice-Hall, 1989
Buku Teks