APA Citation

Organization of the Petroleum Exporting Countries (OPEC). (2009). World oil outlook 2009. Vienna: OPEC.

Chicago Style Citation

Organization of the Petroleum Exporting Countries (OPEC). World Oil Outlook 2009. Vienna: OPEC, 2009.

MLA Citation

Organization of the Petroleum Exporting Countries (OPEC). World Oil Outlook 2009. Vienna: OPEC, 2009.

Warning: These citations may not always be 100% accurate.