Cita APA (7a ed.)

Callahan, D. (1970). Abortion - law, choice and morality (1. print.). MacMillan.

Cita Chicago Style (17a ed.)

Callahan, Daniel. Abortion - Law, Choice and Morality. 1. print. London: MacMillan, 1970.

Cita MLA (9a ed.)

Callahan, Daniel. Abortion - Law, Choice and Morality. 1. print. MacMillan, 1970.