APA
United Nations Economic Commission for Europe, United Nations Economic Commission for Europe, . (1976). increased energy economy and efficiency in the ECE. New York: United Nations USA.
Chicago
United Nations Economic Commission for Europe, United Nations Economic Commission for Europe, . 1976. increased energy economy and efficiency in the ECE. New York: United Nations USA.
Harvard
United Nations Economic Commission for Europe, United Nations Economic Commission for Europe, . (1976). increased energy economy and efficiency in the ECE. New York: United Nations USA.
MLA
United Nations Economic Commission for Europe, United Nations Economic Commission for Europe, . increased energy economy and efficiency in the ECE. New York: United Nations USA. 1976.