Cita APA (7th ed.)

Richards, T. (1983). Comparative analysis of fertility, breastfeeding and contraception: A dynamic model. National Academy Press.

Cita Chicago (17th ed.)

Richards, Toni. Comparative Analysis of Fertility, Breastfeeding and Contraception: A Dynamic Model. Washington, D. C: National Academy Press, 1983.

Cita MLA (9th ed.)

Richards, Toni. Comparative Analysis of Fertility, Breastfeeding and Contraception: A Dynamic Model. National Academy Press, 1983.