(2011). EU transport in figures: Statistical pocketbook. Publ. Off. of the Europ. Union.
Chicago-referens (17:e uppl.)EU Transport in Figures: Statistical Pocketbook. Luxembourg: Publ. Off. of the Europ. Union, 2011.
MLA-referens (8:e uppl.)EU Transport in Figures: Statistical Pocketbook. Publ. Off. of the Europ. Union, 2011.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.