Loraine, J. A., & Bell, E. T. (1968). Fertility and contraception in the human female. E. & S. Livingstone.
Cita Chicago Style (17a ed.)Loraine, John Alexander, y E. Trevor Bell. Fertility and Contraception in the Human Female. Edinburgh: E. & S. Livingstone, 1968.
Cita MLA (9a ed.)Loraine, John Alexander, y E. Trevor Bell. Fertility and Contraception in the Human Female. E. & S. Livingstone, 1968.
Precaución: Estas citas no son 100% exactas.