United nations. (1990). The recuperation and economic utilization of by-products of the iron and steel industty. UN.
Цитирование в стиле Чикаго (17-е изд.)United nations. The Recuperation and Economic Utilization of By-products of the Iron and Steel Industty. New York: UN, 1990.
Цитирование MLA (8-е изд.)United nations. The Recuperation and Economic Utilization of By-products of the Iron and Steel Industty. UN, 1990.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.