Kirkpatrick, Donald L., author
American Society for Training & Development, 2006
eBooks
Stolovitch, Harold D.,author
ASTD Press, 2006
Buku Teks
McGraw-Hill, 1994
Buku Teks
edited by Susan E. Jackson, Michael A. Hitt and Angelo S. DeNisi
Jossey-Bass, 2003
Buku Teks
Mackie, Raymond K., author
Longman Scientific & Technical, 1990
Buku Teks