World health organisation. (1993). Guidelines for drinking water quality: :v.1 recommendations (2nd ed.). World Health Organisation.
Chicago Edition CitationWorld health organisation. Guidelines for Drinking Water Quality: :v.1 Recommendations. 2nd ed. Geneva: World Health Organisation, 1993.
MLA Edition CitationWorld health organisation. Guidelines for Drinking Water Quality: :v.1 Recommendations. 2nd ed. World Health Organisation, 1993.
Warning: These citations may not always be 100% accurate.