Não informado. (1969). Research in Reproduction. International Planned Parenthood Federation.
Style de citation Chicago (17e éd.)Não informado. Research in Reproduction. London: International Planned Parenthood Federation, 1969.
Style de citation MLA (8e éd.)Não informado. Research in Reproduction. International Planned Parenthood Federation, 1969.
Attention : ces citations peuvent ne pas être correctes à 100%.