Morrisey, George L., author
Prenhallindo, 1997
Buku Referensi
Julius Valentinus H. Anggawan, author
Fakultas Ekonomi dan Bisnis Universitas Indonesia, 2000
UI - Tesis (Membership)
Artikel Jurnal
Gilley, Jerry W., author
American Society for Training & Development, 1992
eBooks
Gilley, Jerry W., author
[American Society for Training and Development Press, American Society for Training and Development Press], 1998
eBooks