Cita APA (7th ed.)
(2010). Implementing congestion charges. OECD : ITF.
Cita Chicago (17th ed.)
Implementing Congestion Charges. [Place of publication not identified]: OECD : ITF, 2010.
Cita MLA (9th ed.)
Implementing Congestion Charges. OECD : ITF, 2010.
Atenció: Aquestes cites poden no estar 100% correctes.