World Health Organization. 2009. Calcium and magnesium in drinking-water: Public health significance. Geneva: World Health Organization.
Citáce podľa APA (7th ed.)World Health Organization. (2009). Calcium and magnesium in drinking-water: Public health significance. World Health Organization.
Citácia podle Chicago (17th ed.)World Health Organization. Calcium and Magnesium in Drinking-water: Public Health Significance. Geneva: World Health Organization, 2009.
Citácia podľa MLA (8th ed.)World Health Organization. Calcium and Magnesium in Drinking-water: Public Health Significance. World Health Organization, 2009.
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