United Nations. Dept. of International Economic and Social Affairs. Population Division & Expert Group Meeting on Methods of Measuring the Impact of Family Planning Programmes on Fertility. (1985). Studies to enhance the evaluation of family planning programmes. United Nations.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)United Nations. Dept. of International Economic and Social Affairs. Population Division و Expert Group Meeting on Methods of Measuring the Impact of Family Planning Programmes on Fertility. Studies to Enhance the Evaluation of Family Planning Programmes. New York: United Nations, 1985.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)United Nations. Dept. of International Economic and Social Affairs. Population Division و Expert Group Meeting on Methods of Measuring the Impact of Family Planning Programmes on Fertility. Studies to Enhance the Evaluation of Family Planning Programmes. United Nations, 1985.