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