World Health Organization & International Water Association Environmental Protection Agency. (2012). Animal waste, water quality and human health. World Health Organization.
Chicago-referens (17:e uppl.)World Health Organization och International Water Association Environmental Protection Agency. Animal Waste, Water Quality and Human Health. London: World Health Organization, 2012.
MLA-referens (8:e uppl.)World Health Organization och International Water Association Environmental Protection Agency. Animal Waste, Water Quality and Human Health. World Health Organization, 2012.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.