International energy agency. (2002). World energy outlook 2002. Organisation economic cooperation and development.
Cita Chicago (17th ed.)International energy agency. World Energy Outlook 2002. France: Organisation economic cooperation and development, 2002.
Cita MLA (9th ed.)International energy agency. World Energy Outlook 2002. Organisation economic cooperation and development, 2002.
Atenció: Aquestes cites poden no estar 100% correctes.