APA (7. basım) Alıntı

Ayer, A. J. (1956). The problem of knowledge. Penguin Books.

Chicago Style (17. basım) Atıf

Ayer, A. J. The Problem of Knowledge. Harmondsworth, Middlesex: Penguin Books, 1956.

MLA (9th ed.) Atıf

Ayer, A. J. The Problem of Knowledge. Penguin Books, 1956.