APA (7th ed.) Citation

World Health Organization & ProQuest (Firm). (2009). Calcium and magnesium in drinking-water: Public health significance. World Health Organization.

Chicago Style (17th ed.) Citation

World Health Organization and ProQuest (Firm). Calcium and Magnesium in Drinking-water: Public Health Significance. Geneva, Switzerland: World Health Organization, 2009.

MLA (9th ed.) Citation

World Health Organization and ProQuest (Firm). Calcium and Magnesium in Drinking-water: Public Health Significance. World Health Organization, 2009.