Cita APA (7th ed.)

Ayer, A. (1984). Freedom and morality and other essays. Clarendon Press.

Cita Chicago (17th ed.)

Ayer, A.J. Freedom and Morality and Other Essays. Oxford: Clarendon Press, 1984.

Cita MLA (9th ed.)

Ayer, A.J. Freedom and Morality and Other Essays. Clarendon Press, 1984.