World Health Organization. (1998). Guidelines for drinking - water quality: Health Criteria and other supporting information (second.). World Health Organization.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)World Health Organization. Guidelines for Drinking - Water Quality: Health Criteria and Other Supporting Information. second. Geneva: World Health Organization, 1998.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)World Health Organization. Guidelines for Drinking - Water Quality: Health Criteria and Other Supporting Information. second. World Health Organization, 1998.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.