United Nations. Economic Commission for Europe. (1980). Measures for saving materials in engineering industries. United Nations.
Chicago-Zitierstil (17. Ausg.)United Nations. Economic Commission for Europe. Measures for Saving Materials in Engineering Industries. New York: United Nations, 1980.
MLA-Zitierstil (9. Ausg.)United Nations. Economic Commission for Europe. Measures for Saving Materials in Engineering Industries. United Nations, 1980.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.