European Commission & European Commission Eurostat. (2001). Panorama of transport: Statistical overview of road, rail, inland waterways and air transport in the European Union. Office for Official Publications of the European Communities.
Παραπομπή σε μορφή Chicago (17η εκδ.)European Commission και European Commission Eurostat. Panorama of Transport: Statistical Overview of Road, Rail, Inland Waterways and Air Transport in the European Union. Luxembourg: Office for Official Publications of the European Communities, 2001.
Παραπομπή σε μορφή MLA (8th εκδ.)European Commission και European Commission Eurostat. Panorama of Transport: Statistical Overview of Road, Rail, Inland Waterways and Air Transport in the European Union. Office for Official Publications of the European Communities, 2001.
