Style de citation APA (7e éd.)

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

Style de citation Chicago (17e éd.)

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

Style de citation MLA (9e éd.)

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

Attention : ces citations peuvent ne pas être correctes à 100%.