APA引文

United Nations. Economic Commission for Europe. (1949). European steel trends in the setting of the world market.

Chicago Style (17th ed.) Citation

United Nations. Economic Commission for Europe. European Steel Trends in the Setting of the World Market. Prepared by the Steel Division Economic Commission for Europe. Geneva, 1949.

MLA引文

United Nations. Economic Commission for Europe. European Steel Trends in the Setting of the World Market. 1949.