Não informado. (1969). Research in Reproduction. International Planned Parenthood Federation.
Cita Chicago Style (17a ed.)Não informado. Research in Reproduction. London: International Planned Parenthood Federation, 1969.
Cita MLA (8a ed.)Não informado. Research in Reproduction. International Planned Parenthood Federation, 1969.
Precaución: Estas citas no son 100% exactas.