Organisation for Economic Co-operation and Development. (2016). Policy guidance on resource efficiency. Organisation for Economic Co-operation and Development.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Organisation for Economic Co-operation and Development. Policy Guidance on Resource Efficiency. Paris, France: Organisation for Economic Co-operation and Development, 2016.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Organisation for Economic Co-operation and Development. Policy Guidance on Resource Efficiency. Organisation for Economic Co-operation and Development, 2016.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.