Pinto, Jeffrey K., author
Van Nostrand Reinhold, 1995
Buku Teks
Kaleba, Kermit, author
American Society for Training & Development, 2007
eBooks
Bahadir Inozu, Dan Chauncey, Vickie Kamataris, Charles Mount
McGraw-Hill, 2012
Buku Teks
Tay, Ronald, author
Marshall Cavendish, 2014
Buku Teks
Smilansky, Jonathan, author
Wiley ; San Francisco, CA : Jossey-Bass, 2007
Buku Teks