European Commission (Brussels, Belgium). (2010). European public procurement ([1st ed.].). Publications Office of the European Union.
Chicago-Zitierstil (17. Ausg.)European Commission (Brussels, Belgium). European Public Procurement. [1st ed.]. [Luxembourg]: Publications Office of the European Union, 2010.
MLA-Zitierstil (9. Ausg.)European Commission (Brussels, Belgium). European Public Procurement. [1st ed.]. Publications Office of the European Union, 2010.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.