Cita APA (7th ed.)

Ayer, A. J. (1969). Philosophical Essays (Reprint ed.). Macmillan.

Cita Chicago (17th ed.)

Ayer, A. J. Philosophical Essays. Reprint ed. London: Macmillan, 1969.

Cita MLA (9th ed.)

Ayer, A. J. Philosophical Essays. Reprint ed. Macmillan, 1969.