Não informado. (1976). Quarterly oil statistics. Organization for Economic Co-operation and Development.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Não informado. Quarterly Oil Statistics. Paris: Organization for Economic Co-operation and Development, 1976.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Não informado. Quarterly Oil Statistics. Organization for Economic Co-operation and Development, 1976.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.