Kirkpatrick, Donald L., author
Amacom, 2006
Buku Teks
John Wiley , 1981
Buku Teks
Philip, Tom
McGraw-Hill , 1983
Buku Teks
revision consultant, Stew Hickman
[American Society for Training and Development Press, American Society for Training and Development Press], 2001
eBooks
Kirkpatrick, Donald L., author
American Management Association, 2006
eBooks