Cita APA (7th ed.)

AYER, A. (1979). The Central questions of philosophy. Macmillan.

Cita Chicago (17th ed.)

AYER, A.J. The Central Questions of Philosophy. Calcutta: Macmillan, 1979.

Cita MLA (9th ed.)

AYER, A.J. The Central Questions of Philosophy. Macmillan, 1979.