Cita APA (7a ed.)

Callahan, D. (1973). Abortion: Law, choice and morality. Collier-Macmillan.

Cita Chicago Style (17a ed.)

Callahan, Daniel. Abortion: Law, Choice and Morality. London: Collier-Macmillan, 1973.

Cita MLA (9a ed.)

Callahan, Daniel. Abortion: Law, Choice and Morality. Collier-Macmillan, 1973.