International Planned Parenthood Federation. (1967). Preventive medicine and family planning: Proceedings of the fifth Conference of the Europe and Near East Region of the I. P. P. F., Copenhagen, 5-8 July 1966. International Planned Parenthood Federation.
Παραπομπή σε μορφή Chicago (17η εκδ.)International Planned Parenthood Federation. Preventive Medicine and Family Planning: Proceedings of the Fifth Conference of the Europe and Near East Region of the I. P. P. F., Copenhagen, 5-8 July 1966. London: International Planned Parenthood Federation, 1967.
Παραπομπή σε μορφή MLA (8th εκδ.)International Planned Parenthood Federation. Preventive Medicine and Family Planning: Proceedings of the Fifth Conference of the Europe and Near East Region of the I. P. P. F., Copenhagen, 5-8 July 1966. International Planned Parenthood Federation, 1967.
