Jogjakarta [t.p.] 1970
UI - Makalah dan Kertas Kerja
Lawson, Karen, author
American Society for Training & Development, 2009
eBooks
Swansburg, Russell C., author
Jones and Bartlett, 1990
Buku Teks
DuBrin, Andrew J., author
Prenada Media Group, 2009
Buku Teks
Sample, Steven B.
Jossey-Bass, 2002
Buku Teks