Παραπομπή σε μορφή APA (7η εκδ.)

European Commission. (2007). Europe making our skies safer. European Commission, Directorate-General for Energy and Transport.

Παραπομπή σε μορφή Chicago (17η εκδ.)

European Commission. Europe Making Our Skies Safer. Brussels: European Commission, Directorate-General for Energy and Transport, 2007.

Παραπομπή σε μορφή MLA (8th εκδ.)

European Commission. Europe Making Our Skies Safer. European Commission, Directorate-General for Energy and Transport, 2007.