APA(7版)引用形式

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.