Não informado. (1947). Monthly Bulletin of Statistics. United Nations, Department of Economic and Social Affairs, Statistical Office.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Não informado. Monthly Bulletin of Statistics. New York: United Nations, Department of Economic and Social Affairs, Statistical Office, 1947.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Não informado. Monthly Bulletin of Statistics. United Nations, Department of Economic and Social Affairs, Statistical Office, 1947.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.