1. Tortajada C (2006) Water management in Singapore. Int J Water Resour D (June 2006) 22(2):227–240
2. United Nations Educational, Scientific and Cultural Organisation (2006) Water – A Shared Responsibility (United Nations World Water Development Report 2.), Paris.
3. World Bank Report (1996) ‘Water Supply and Sanitation Projects: The Bank’s Experience – 1967–1989’, Washington, D.C.