Mehrotra, Chandra Mohan, author
Sage Publications, 2001
Buku Teks
Thach, Elizabeth C., author
[American Society for Training & Development Press, American Society for Training & Development Press], 2001
eBooks
Kemp, Jerrold E., author
Fearon Publ., 1977
Buku Teks
Davis, Robert H., author
McGrow-Hill Book, 1974
Buku Teks
Combs, Wendy, author
American Society for Training & Development, 2006
eBooks