Cita APA (7a ed.)

Hawkins, D. F., & Elder, M. G. (1979). Human fertility control: Theory and practice. Butterworths.

Cita Chicago Style (17a ed.)

Hawkins, Denis Frank, y M. G. Elder. Human Fertility Control: Theory and Practice. London ; Boston: Butterworths, 1979.

Cita MLA (9a ed.)

Hawkins, Denis Frank, y M. G. Elder. Human Fertility Control: Theory and Practice. Butterworths, 1979.