Loraine, J. A., & Bell, E. T. (1968). Fertility and contraception in the human female. E. & S. Livingstone.
Chicago Style aipamenaLoraine, John Alexander, and E. Trevor Bell. Fertility and Contraception in the Human Female. Edinburgh: E. & S. Livingstone, 1968.
MLA aipamenaLoraine, John Alexander, and E. Trevor Bell. Fertility and Contraception in the Human Female. E. & S. Livingstone, 1968.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.