United Nations. Department of International Economic and Social Affairs & Expert Group Meeting on Measuring the Dynamics of Contraceptive Use (1988 : New York, N.Y.). (1991). Measuring the dynamics of contraceptive use: Proceedings of the United Nations Expert Group Meeting on Measuring the Dynamics of Contraceptive Use, New York, 5-7 December 1988. United Nations.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)United Nations. Department of International Economic and Social Affairs و N.Y.) Expert Group Meeting on Measuring the Dynamics of Contraceptive Use (1988 : New York. Measuring the Dynamics of Contraceptive Use: Proceedings of the United Nations Expert Group Meeting on Measuring the Dynamics of Contraceptive Use, New York, 5-7 December 1988. New York: United Nations, 1991.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)United Nations. Department of International Economic and Social Affairs و N.Y.) Expert Group Meeting on Measuring the Dynamics of Contraceptive Use (1988 : New York. Measuring the Dynamics of Contraceptive Use: Proceedings of the United Nations Expert Group Meeting on Measuring the Dynamics of Contraceptive Use, New York, 5-7 December 1988. United Nations, 1991.