World Health Organization. (2009). Calcium and magnesium in drinking water: Public health significance (Primera edición.). World Health Organization.
Chicago (17e ed.) BronvermeldingWorld Health Organization. Calcium and Magnesium in Drinking Water: Public Health Significance. Primera edición. Geneva: World Health Organization, 2009.
MLA (8e ed.) BronvermeldingWorld Health Organization. Calcium and Magnesium in Drinking Water: Public Health Significance. Primera edición. World Health Organization, 2009.
Let op: Deze citaties zijn niet altijd 100% accuraat.