European Commission (Brussels, Belgium). (1997). Guidebook for the project definition phase: 1997 edition ([1st ed.].). Office for Official Publications of the European Communities.
Chicago-Zitierstil (17. Ausg.)European Commission (Brussels, Belgium). Guidebook for the Project Definition Phase: 1997 Edition. [1st ed.]. Luxembourg: Office for Official Publications of the European Communities, 1997.
MLA-Zitierstil (9. Ausg.)European Commission (Brussels, Belgium). Guidebook for the Project Definition Phase: 1997 Edition. [1st ed.]. Office for Official Publications of the European Communities, 1997.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.