World Health Organization. (2009). Calcium and magnesium in drinking water: Public health significance (Primera edición.). World Health Organization.
Chicago Style (17th ed.) CitationWorld Health Organization. Calcium and Magnesium in Drinking Water: Public Health Significance. Primera edición. Geneva: World Health Organization, 2009.
MLA引文World Health Organization. Calcium and Magnesium in Drinking Water: Public Health Significance. Primera edición. World Health Organization, 2009.
警告:這些引文格式不一定是100%准確.