APA Citation

(2009). OPEC bulletin. Vienna: Organization of the Petroleum Exporting Countries (OPEC).

Chicago Style Citation

OPEC Bulletin. Vienna: Organization of the Petroleum Exporting Countries (OPEC), 2009.

MLA Citation

OPEC Bulletin. Vienna: Organization of the Petroleum Exporting Countries (OPEC), 2009.

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