1. Progress on Sanitation and Drinking Water—2015 Update and MDG Assessment,2015
2. Fecal Contamination of Drinking-Water in Low- and Middle-Income Countries: A Systematic Review and Meta-Analysis
3. Water supply, sanitation, and hygiene promotion;Cairncross,2006
4. The Millennium Development Goals Report 2015http://www.un.org/millenniumgoals/2015_MDG_Report/pdf/MDG%202015%20rev%20(July%201).pdf
5. Meeting the MDG Drinking Water and Sanitation Target: The Urban and Rural Challenge of the Decade,2006