United Nations Industrial Development Organization. (1977). Infomation souuces on the iron and steel industry. New York: United Nations.
Citação norma ChicagoUnited Nations Industrial Development Organization. Infomation Souuces On the Iron and Steel Industry. New York: United Nations, 1977.
Citação norma MLAUnited Nations Industrial Development Organization. Infomation Souuces On the Iron and Steel Industry. New York: United Nations, 1977.
Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.