Biech, Elaine.
ASTD Press, 2009
Multimedia
Biech, Elaine.
ASTD Press, 2009
Multimedia
Russell, Linda
American Society for Training & Development, 2009
eBooks
Burns, Tom
Sage Publications, 2003
Buku Teks
Mel Silberman, editor
American Society for Training & Development, 2005
eBooks