Organisation for Economic Co-operation and Development & ProQuest (Firm). (2006). Les infrastructures a l'horizon 2030. OCDE.
Cita Chicago (17th ed.)Organisation for Economic Co-operation and Development i ProQuest (Firm). Les Infrastructures a L'horizon 2030. Paris: OCDE, 2006.
Cita MLA (9th ed.)Organisation for Economic Co-operation and Development i ProQuest (Firm). Les Infrastructures a L'horizon 2030. OCDE, 2006.
Atenció: Aquestes cites poden no estar 100% correctes.