Não informado. Statistics of world trade in steel. United Nations, Economic Commission for Europe.
Chicagoスタイル(17版)引用形式Não informado. Statistics of World Trade in Steel. New York: United Nations, Economic Commission for Europe.
MLA(8版)引用形式Não informado. Statistics of World Trade in Steel. United Nations, Economic Commission for Europe.
警告: この引用は必ずしも正確ではありません.