United Nations. Department of Economic and Social Affairs. (2007). World economic and social survey 2007: Development in an ageing world. United Nations.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)United Nations. Department of Economic and Social Affairs. World Economic and Social Survey 2007: Development in an Ageing World. New York: United Nations, 2007.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)United Nations. Department of Economic and Social Affairs. World Economic and Social Survey 2007: Development in an Ageing World. United Nations, 2007.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.