Poole, Laura
McGraw Hil , 2013
Buku Teks
Kirkpatrick, Donald L.
Amacom, 2006
Buku Teks
Kirkpatrick, Donald L.
American Management Association, 2006
eBooks
Garber, Peter R.
American Society for Training & Development, 2011
eBooks
Garber, Peter R.
ASTD Press, 2011
Buku Teks