Gaya APA

}, P, M, D, {, E, A. et al (1976). Reproduction and Human Welfare : A Challenge to Research Review of the Reproductive Sciences and Contraceptive Devolopment . Cambridge: The Mit Press.

Gaya MLA

}, Peter, M, Doubelet, {, Et, Al. et al. "Reproduction and Human Welfare : A Challenge to Research Review of the Reproductive Sciences and Contraceptive Devolopment". Cambridge: The Mit Press, 1976. Text.