International Planned Parenthood Federation, IPPF Central Medical Committee, Hardy, N., & Kestelman, P. (1971). Directory of contraceptives. International Planned Parenthood Federation.
Chicago Style (17th ed.) CitationInternational Planned Parenthood Federation, IPPF Central Medical Committee, Norman Hardy, and Philip Kestelman. Directory of Contraceptives. London: International Planned Parenthood Federation, 1971.
MLA (9th ed.) CitationInternational Planned Parenthood Federation, et al. Directory of Contraceptives. International Planned Parenthood Federation, 1971.
Warning: These citations may not always be 100% accurate.