editor Peter de Haan and Yvonne van Hees
Netherlands Development Cooperation Information Department, 1996
Buku Teks
UK Department for International Development and the Natural Environment Research Council, 2015
Majalah, Jurnal, Buletin
Esacove, Anne
Oxford University Press, 2016
eBooks
The Work Bank , 1981
Buku Teks
The John Hopkins Press, 1956
Buku Teks