World health Organization UNICEF. (2000). Global water supply and sanitation assessment 2000 report. World HealthOrganization.
Chicago-viite (17. p.)World health Organization UNICEF. Global Water Supply and Sanitation Assessment 2000 Report. United States of America: World HealthOrganization, 2000.
MLA-viite (8. p.)World health Organization UNICEF. Global Water Supply and Sanitation Assessment 2000 Report. World HealthOrganization, 2000.
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