APA引文

United Nations. Economic Commission for Europe. Statistics of world trade in steel. United Nations, Economic Commission for Europe.

Chicago Style (17th ed.) Citation

United Nations. Economic Commission for Europe. Statistics of World Trade in Steel. New York [etc.]: United Nations, Economic Commission for Europe.

MLA引文

United Nations. Economic Commission for Europe. Statistics of World Trade in Steel. United Nations, Economic Commission for Europe.

警告：這些引文格式不一定是100％准確.