United Nations Industrial Development Organization. (1977). Information sources on the iron and steel industry. United Nations.
Цитирование в стиле Чикаго (17-е изд.)United Nations Industrial Development Organization. Information Sources on the Iron and Steel Industry. New York: United Nations, 1977.
Цитирование MLA (9-е изд.)United Nations Industrial Development Organization. Information Sources on the Iron and Steel Industry. United Nations, 1977.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.