United Nations. Economic Commission for Europe. Statistics of world trade in steel. United Nations, Economic Commission for Europe.
Citação do estilo Chicago (17ª ed.)United Nations. Economic Commission for Europe. Statistics of World Trade in Steel. New York [etc.]: United Nations, Economic Commission for Europe.
Citação MLA (8ª ed.)United Nations. Economic Commission for Europe. Statistics of World Trade in Steel. United Nations, Economic Commission for Europe.
Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.