World Health organization. (2006). Guidelines for drinking - water quality: Recommendations. World Health Organization.
Chicago Style (17th ed.) CitationWorld Health organization. Guidelines for Drinking - Water Quality: Recommendations. Geneva: World Health Organization, 2006.
ציטוט MLAWorld Health organization. Guidelines for Drinking - Water Quality: Recommendations. World Health Organization, 2006.
אזהרה: ציטוטים אלה לעיתים לא מדויקים ב 100%.