Biech, Elaine, author
ASTD press, 2009
Buku Teks
Biech, Elaine.
ASTD Press, 2009
Multimedia
Biech, Elaine.
ASTD Press, 2009
Multimedia
Rosania, Robert J., author
ASTD Press, 2001
Buku Teks
Mel Silberman, editor; Patricia Phillips, assistant editor
American Society for Training & Development, 2005
eBooks