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Chicago-Zitierstil (17. Ausg.)European Commission, Energy (Brussels, Belgium). Energy Markets in the European Union in 2011. Luxembourg: Publications Office of the European Union, 2012.
MLA-Zitierstil (9. Ausg.)European Commission, Energy (Brussels, Belgium). Energy Markets in the European Union in 2011. Publications Office of the European Union, 2012.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.