Lichten, Edward M, author
Edward M.Lichten, 2007
Buku Teks
Gerald Litwack, author
Elsevier , 2011
Buku Teks
Medical Journal of Indonesia, 14 (3) July September 2005: 163-168, 2005
Artikel Jurnal
Reitman, Annabelle, author
American Society for Training & Development, 2007
eBooks
Chowdhury, Subir, author
Financial Times Prentice Hall , 2002
Buku Teks