Cita APA (7a ed.)

Westoff, L. A., & Westoff, C. F. (1971). From now to zero: Fertility, contraception and abortion in America. Little, Brown.

Cita Chicago Style (17a ed.)

Westoff, Leslie Aldridge, y Charles F. Westoff. From Now to Zero: Fertility, Contraception and Abortion in America. Boston: Little, Brown, 1971.

Cita MLA (9a ed.)

Westoff, Leslie Aldridge, y Charles F. Westoff. From Now to Zero: Fertility, Contraception and Abortion in America. Little, Brown, 1971.