United Nations Industrial Development Organization. (1977). Information sources on the iron and steel industry. United Nations.
Chicago-Zitierstil (17. Ausg.)United Nations Industrial Development Organization. Information Sources on the Iron and Steel Industry. New York: United Nations, 1977.
MLA-Zitierstil (9. Ausg.)United Nations Industrial Development Organization. Information Sources on the Iron and Steel Industry. United Nations, 1977.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.