Não informado. Statistics of world trade in steel. United Nations, Economic Commission for Europe.
Style de citation Chicago (17e éd.)Não informado. Statistics of World Trade in Steel. New York: United Nations, Economic Commission for Europe.
Style de citation MLA (8e éd.)Não informado. Statistics of World Trade in Steel. United Nations, Economic Commission for Europe.
Attention : ces citations peuvent ne pas être correctes à 100%.