Organisation for Economic Co-operation and Development. (1999). The Price of water: Trends in OECD countries. Organisation for Economic Co-operation and Development.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Organisation for Economic Co-operation and Development. The Price of Water: Trends in OECD Countries. Paris, France: Organisation for Economic Co-operation and Development, 1999.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Organisation for Economic Co-operation and Development. The Price of Water: Trends in OECD Countries. Organisation for Economic Co-operation and Development, 1999.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.