Παραπομπή σε μορφή APA (7η εκδ.)

European Commission. (2004). The single european sky: Implementing political commitments. Office for Official Publications of the European Communities.

Παραπομπή σε μορφή Chicago (17η εκδ.)

European Commission. The Single European Sky: Implementing Political Commitments. Luxembourg: Office for Official Publications of the European Communities, 2004.

Παραπομπή σε μορφή MLA (8th εκδ.)

European Commission. The Single European Sky: Implementing Political Commitments. Office for Official Publications of the European Communities, 2004.