International Energy Agency, Organisation for Economic Co-operation and Development, & ProQuest (Firm). (2009). Energy policies of IEA countries. Organization for Economic Co-operation and Development : International Energy Agency.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)International Energy Agency, Organisation for Economic Co-operation and Development, و ProQuest (Firm). Energy Policies of IEA Countries. Paris: Organization for Economic Co-operation and Development : International Energy Agency, 2009.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)International Energy Agency, et al. Energy Policies of IEA Countries. Organization for Economic Co-operation and Development : International Energy Agency, 2009.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.