APA引文

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, Austria: Organization of the Petroleum Exporting Countries.

MLA引文

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

警告：這些引文格式不一定是100％准確.