APA
UNITED NATIONS E. C. F. E., UNITED NATIONS E. C. F. E., . (1993). Statistics of world trade in steel. New York: United Nations.
Chicago
UNITED NATIONS ECONOMIC COMMISSION FOR EUROPE, UNITED NATIONS ECONOMIC COMMISSION FOR EUROPE, . 1993. Statistics of world trade in steel. New York: United Nations.
Harvard
UNITED NATIONS E. C. F. E., UNITED NATIONS E. C. F. E., . (1993). Statistics of world trade in steel. New York: United Nations.
MLA
UNITED NATIONS ECONOMIC COMMISSION FOR EUROPE, UNITED NATIONS ECONOMIC COMMISSION FOR EUROPE, . Statistics of world trade in steel. New York: United Nations. 1993.
