Cita APA (7a ed.)

FOOT, P. (1967). Theories of ethics. O.U.Pr.

Cita Chicago Style (17a ed.)

FOOT, Philippa. Theories of Ethics. Oxford: O.U.Pr, 1967.

Cita MLA (9a ed.)

FOOT, Philippa. Theories of Ethics. O.U.Pr, 1967.