Cita APA (7th ed.)
International Energy Agency. (2013). World energy outlook 2013. International Energy Agency.
Cita Chicago (17th ed.)
International Energy Agency. World Energy Outlook 2013. France: International Energy Agency, 2013.
Cita MLA (9th ed.)
International Energy Agency. World Energy Outlook 2013. International Energy Agency, 2013.
Atenció: Aquestes cites poden no estar 100% correctes.