Kirkpatrick, Donald L., author
American Society for Training & Development, 2006
eBooks
Laurene Vaughan
Bloomsbury Academic, 2017
Buku Teks
Simpson, George Gaylord
Pergamon Press, 1980
Buku Teks
Kaplan, Abraham, author
Harper & Row, 1963
Buku Teks
edited by Helina Melkas, Vesa Harmaakorpi
Springer, 2012
eBooks