Organization of the Petroleum Exporting Countries. editor. OPEC Bulletin. Organization of the Petroleum Exporting Countries.
Cita Chicago Style (17a ed.)Organization of the Petroleum Exporting Countries. editor. OPEC Bulletin. Vienna: Organization of the Petroleum Exporting Countries.
Cita MLA (9a ed.)Organization of the Petroleum Exporting Countries. editor. OPEC Bulletin. Organization of the Petroleum Exporting Countries.
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