M. Black,
Poverty reduction and IWRM, vol. no. 8. Stockholm, Sweden: Global Water Partnership (GWP), 2003, p. 40 p. : 11 boxes.
B. Appleton,
«Town water supply and sanitation companion papers. Volume 3». Bank-Netherlands Water Partnership (BNWP), Washington, DC, USA, p. 362 p, : fig., tab., 2003.