World Health Organization. (2009). Calcium and magnesium in drinking water: Public health significance (Primera edición.). World Health Organization.
Citação do estilo Chicago (17ª ed.)World Health Organization. Calcium and Magnesium in Drinking Water: Public Health Significance. Primera edición. Geneva: World Health Organization, 2009.
Citação MLA (8ª ed.)World Health Organization. Calcium and Magnesium in Drinking Water: Public Health Significance. Primera edición. World Health Organization, 2009.
Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.