APA (7th ed.) Citation

Organization of Petroleum Exporting Countries. OPEC bulletin. Organization of the Petroleum Exporting Countries.

Chicago Style (17th ed.) Citation

Organization of Petroleum Exporting Countries. OPEC Bulletin. Vienna: Organization of the Petroleum Exporting Countries.

MLA (9th ed.) Citation

Organization of Petroleum Exporting Countries. OPEC Bulletin. Organization of the Petroleum Exporting Countries.

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