World Health Organization & International Water Association Environmental Protection Agency. (2012). Animal waste, water quality and human health. World Health Organization.
Chicago-viite (17. p.)World Health Organization ja International Water Association Environmental Protection Agency. Animal Waste, Water Quality and Human Health. London: World Health Organization, 2012.
MLA-viite (8. p.)World Health Organization ja International Water Association Environmental Protection Agency. Animal Waste, Water Quality and Human Health. World Health Organization, 2012.
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