World Health Organization. (2011). Guidelines for drinking-water quality (4th.). World Health Organization.
Chicago Style (17th ed.) CitationWorld Health Organization. Guidelines for Drinking-water Quality. 4th. Geneva, Switzerland: World Health Organization, 2011.
ציטוט MLAWorld Health Organization. Guidelines for Drinking-water Quality. 4th. World Health Organization, 2011.
אזהרה: ציטוטים אלה לעיתים לא מדויקים ב 100%.