United Nations Department of Economic and Social Affairs Statistics Division. (2002). Handbook on training in civil registration and vital statistics systems. United Nations.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)United Nations Department of Economic and Social Affairs Statistics Division. Handbook on Training in Civil Registration and Vital Statistics Systems. New York: United Nations, 2002.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)United Nations Department of Economic and Social Affairs Statistics Division. Handbook on Training in Civil Registration and Vital Statistics Systems. United Nations, 2002.