United nations. (1999). Proceedings of the international symposium on efficient water use in urban areas: Innovative ways of finding water for cities. UN.
Цитирование в стиле Чикаго (17-е изд.)United nations. Proceedings of the International Symposium on Efficient Water Use in Urban Areas: Innovative Ways of Finding Water for Cities. Osaka: UN, 1999.
Цитирование MLA (8-е изд.)United nations. Proceedings of the International Symposium on Efficient Water Use in Urban Areas: Innovative Ways of Finding Water for Cities. UN, 1999.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.