APA (7th ed.) Zitazioa

International Energy Agency, Organisation for Economic Co-operation and Development, & ProQuest (Firm). (2011). Oil information 2011: With 2010 data. International Energy Agency.

Chicago Style (17th ed.) Zitazioa

International Energy Agency, Organisation for Economic Co-operation and Development, eta ProQuest (Firm). Oil Information 2011: With 2010 Data. Paris: International Energy Agency, 2011.

MLA (9th ed.) Zitazioa

International Energy Agency, et al. Oil Information 2011: With 2010 Data. International Energy Agency, 2011.