World Health Organization. (2011). Guidelines for drinking-water quality (4th.). World Health Organization.
Цитирование в стиле Чикаго (17-е изд.)World Health Organization. Guidelines for Drinking-water Quality. 4th. Geneva, Switzerland: World Health Organization, 2011.
Цитирование MLA (8-е изд.)World Health Organization. Guidelines for Drinking-water Quality. 4th. World Health Organization, 2011.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.