United Nations. Department of Economic and Social Affairs. Population Division & Expert Group Meeting on Methods of Measuring the Impact of Family Planning Programmes on Fertility (3rd : 1982 : Geneva, Switzerland). (1985). Studies to enhance the evaluation of family planning programmes. United Nations.
Παραπομπή σε μορφή Chicago (17η εκδ.)United Nations. Department of Economic and Social Affairs. Population Division και Switzerland) Expert Group Meeting on Methods of Measuring the Impact of Family Planning Programmes on Fertility (3rd : 1982 : Geneva. Studies to Enhance the Evaluation of Family Planning Programmes. New York: United Nations, 1985.
Παραπομπή σε μορφή MLA (9th εκδ.)United Nations. Department of Economic and Social Affairs. Population Division και Switzerland) Expert Group Meeting on Methods of Measuring the Impact of Family Planning Programmes on Fertility (3rd : 1982 : Geneva. Studies to Enhance the Evaluation of Family Planning Programmes. United Nations, 1985.