International Energy Agency & Organisation for Economic Co-operation and Development. (2002). Bus systems for the future: Achieving sustainable transport worldwide. OECD/IEA.
Lua i Stíl Chicago (17ú heag.)International Energy Agency agus Organisation for Economic Co-operation and Development. Bus Systems for the Future: Achieving Sustainable Transport Worldwide. Paris, France: OECD/IEA, 2002.
Lua MLA (9ú heag.)International Energy Agency agus Organisation for Economic Co-operation and Development. Bus Systems for the Future: Achieving Sustainable Transport Worldwide. OECD/IEA, 2002.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.