Cita APA (7a ed.)

Ayer, A. J. (1972). Philosophical essays (1st ed., repr.). MacMillan.

Cita Chicago Style (17a ed.)

Ayer, A. J. Philosophical Essays. 1st ed., repr. London [etc.]: MacMillan, 1972.

Cita MLA (9a ed.)

Ayer, A. J. Philosophical Essays. 1st ed., repr. MacMillan, 1972.