Dick, Frank W., author
Bloomsbury, 2014
Buku Teks
Cooper, Alfred M., author
McGraw-Hill, 1952
Buku Teks
Pike, Robert, author
Josey Bass, 2000
Buku Teks
Gronstedt, Anders, author
American Society for Training & Development, 2008
eBooks
Mitchell, Jennifer K., author
American Society for Training & Development, 2006
eBooks