McLarney, William J., author
Richard D. Irwin, 1961
Buku Teks
Lisa Haneberg, editor
American Society for Training & Development, 2012
eBooks
McIntosh, Perry, author
[American Management Association;, ], 2011
eBooks
Atwood, Christee Gabour
ASTD Press, 2008
Buku Teks
Stroup, Jim, author
American Management Association, 2008
eBooks