Cita APA (7a ed.)

Butler, J. D., & Walbert, D. F. (1992). Abortion, medicine, and the law (4. ed., completely rev.). Facts on File.

Cita Chicago Style (17a ed.)

Butler, John Douglas, y David F. Walbert. Abortion, Medicine, and the Law. 4. ed., completely rev. New York [u.a.]: Facts on File, 1992.

Cita MLA (8a ed.)

Butler, John Douglas, y David F. Walbert. Abortion, Medicine, and the Law. 4. ed., completely rev. Facts on File, 1992.