Cita APA (7a ed.)

Sumner, L. W. (1981). Abortion and Moral Theory. Princeton University Press.

Cita Chicago Style (17a ed.)

Sumner, L. W. Abortion and Moral Theory. Princeton, New Jersey: Princeton University Press, 1981.

Cita MLA (8a ed.)

Sumner, L. W. Abortion and Moral Theory. Princeton University Press, 1981.