International Energy Agency & Organisation for Economic Co-operation and Development. (2002). Bus systems for the future: Achieving sustainable transport worldwide. OECD/IEA.
Cita Chicago (17th ed.)International Energy Agency i Organisation for Economic Co-operation and Development. Bus Systems for the Future: Achieving Sustainable Transport Worldwide. Paris, France: OECD/IEA, 2002.
Cita MLA (9th ed.)International Energy Agency i Organisation for Economic Co-operation and Development. Bus Systems for the Future: Achieving Sustainable Transport Worldwide. OECD/IEA, 2002.
Atenció: Aquestes cites poden no estar 100% correctes.