Bruce, Anne
American Society for Training & Development, 2008
eBooks
Gronbeck, Bruce E.
Scott, Foresman, 1979
Buku Teks
Gamble, Teri Kwal
Allyn and Bacon, 1994
Buku Teks
Devito, Joseph A.
Harper and Row, 1984
Buku Teks
Floyd, Kory
McGraw-Hill, 2015
Buku Teks