(1997). Validation process fur users' requirements in air traffic operations: Vaporeto. Office for Official Publ. of the Europ. Communities.
Chicago-Zitierstil (17. Ausg.)Validation Process Fur Users' Requirements in Air Traffic Operations: Vaporeto. Luxembourg: Office for Official Publ. of the Europ. Communities, 1997.
MLA-Zitierstil (9. Ausg.)Validation Process Fur Users' Requirements in Air Traffic Operations: Vaporeto. Office for Official Publ. of the Europ. Communities, 1997.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.