APA
United Nations Economic Commission for Europe, United Nations Economic Commission for Europe, . (1990). Recuperation and economic utilization of by products of the iron and steel industry. New: York United Nations USA.
Chicago
United Nations Economic Commission for Europe, United Nations Economic Commission for Europe, . 1990. Recuperation and economic utilization of by products of the iron and steel industry. New: York United Nations USA.
Harvard
United Nations Economic Commission for Europe, United Nations Economic Commission for Europe, . (1990). Recuperation and economic utilization of by products of the iron and steel industry. New: York United Nations USA.
MLA
United Nations Economic Commission for Europe, United Nations Economic Commission for Europe, . Recuperation and economic utilization of by products of the iron and steel industry. New: York United Nations USA. 1990.