Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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