Organisation for Economic Co-operation and Development. (2020). Financing water supply, sanitation and flood protection: Challenges in eu member states and policy options. Organisation for Economic Co-operation and Development.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Organisation for Economic Co-operation and Development. Financing Water Supply, Sanitation and Flood Protection: Challenges in Eu Member States and Policy Options. Paris, France: Organisation for Economic Co-operation and Development, 2020.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Organisation for Economic Co-operation and Development. Financing Water Supply, Sanitation and Flood Protection: Challenges in Eu Member States and Policy Options. Organisation for Economic Co-operation and Development, 2020.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.