APA (7th ed.) Zitazioa

European Conference of Ministers of Transport, Organisation for Economic Co-operation and Development, & ProQuest (Firm). (2007). Cutting transport CO2 emissions: What progress? OECD.

Chicago Style (17th ed.) Zitazioa

European Conference of Ministers of Transport, Organisation for Economic Co-operation and Development, eta ProQuest (Firm). Cutting Transport CO2 Emissions: What Progress? Paris: OECD, 2007.

MLA (9th ed.) Zitazioa

European Conference of Ministers of Transport, et al. Cutting Transport CO2 Emissions: What Progress? OECD, 2007.