World Health Organization & International Water Association Environmental Protection Agency. (2012). Animal waste, water quality and human health. World Health Organization.
Cita Chicago (17th ed.)World Health Organization i International Water Association Environmental Protection Agency. Animal Waste, Water Quality and Human Health. London: World Health Organization, 2012.
Cita MLA (8th ed.)World Health Organization i International Water Association Environmental Protection Agency. Animal Waste, Water Quality and Human Health. World Health Organization, 2012.
Atenció: Aquestes cites poden no estar 100% correctes.