United Nations. Department of International Economic and Social Affairs. (1986). The methodology of measuring the impact of family planning programmes on fertility. United Nations.
Cita Chicago (17th ed.)United Nations. Department of International Economic and Social Affairs. The Methodology of Measuring the Impact of Family Planning Programmes on Fertility. New York: United Nations, 1986.
Cita MLA (9th ed.)United Nations. Department of International Economic and Social Affairs. The Methodology of Measuring the Impact of Family Planning Programmes on Fertility. United Nations, 1986.
Atenció: Aquestes cites poden no estar 100% correctes.