Hibbs, J. (1963). Transport for passengers: A study in enterprise without license. Institute of Economic Affairs.
Cita Chicago (17th ed.)Hibbs, John. Transport for Passengers: A Study in Enterprise Without License. [London]: Institute of Economic Affairs, 1963.
Cita MLA (8th ed.)Hibbs, John. Transport for Passengers: A Study in Enterprise Without License. Institute of Economic Affairs, 1963.
Atenció: Aquestes cites poden no estar 100% correctes.