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Chicago-Zitierstil (17. Ausg.)European Commission, Directorate-General for Regional Policy (Brussels, Belgium). Cities of Tomorrow: Challenges, Visions, Ways Forward. [1st ed.]. Luxembourg: Publications Office of the European Union, 2011.
MLA-Zitierstil (9. Ausg.)European Commission, Directorate-General for Regional Policy (Brussels, Belgium). Cities of Tomorrow: Challenges, Visions, Ways Forward. [1st ed.]. Publications Office of the European Union, 2011.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.