United Nations. Economic Commission for Europe. (1970). Annual bulletin of general energy statistics for Europe. United Nations.
Chicago-Zitierstil (17. Ausg.)United Nations. Economic Commission for Europe. Annual Bulletin of General Energy Statistics for Europe. New York: United Nations, 1970.
MLA-Zitierstil (8. Ausg.)United Nations. Economic Commission for Europe. Annual Bulletin of General Energy Statistics for Europe. United Nations, 1970.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.