Παραπομπή APA
European Commission. (1997). Specification for controller working positions in future air traffic control: SWIFT. Luxembourg: Office for Official Publications of the European Communities.
Παραπομπή Chicago StyleEuropean Commission. Specification for Controller Working Positions in Future Air Traffic Control: SWIFT. Luxembourg: Office for Official Publications of the European Communities, 1997.
Παραπομπή MLAEuropean Commission. Specification for Controller Working Positions in Future Air Traffic Control: SWIFT. Luxembourg: Office for Official Publications of the European Communities, 1997.
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