World Bank, 2006
Buku Teks
Mohammad Sobari
Pustaka Firdaus, 1997
Buku Teks
Kamer, Pearl M., author
Frederick A. Praeger, 1983
Buku Teks
Phillips, Jack J., author
American Society for Training and Development Press;, 2005
eBooks
editor, Matt Stephens, Peri Umar Farouk, Taufik Rinaldi
Justice for the Poor Project, the World Bank, 2006
Buku Teks