World Health Organization. (1997). Guidelines for drinking - water quality: Surveillance and control of community supplies. World Health Organization.
Chicago-viite (17. p.)World Health Organization. Guidelines for Drinking - Water Quality: Surveillance and Control of Community Supplies. Geneva: World Health Organization, 1997.
MLA-viite (8. p.)World Health Organization. Guidelines for Drinking - Water Quality: Surveillance and Control of Community Supplies. World Health Organization, 1997.
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