APA Edition Citation

Ayer, A. J. (1962). The problem of knowledge. Penguin Books.

Chicago Edition Citation

Ayer, A. J. The Problem of Knowledge. Baltimore, Md.: Penguin Books, 1962.

MLA Edition Citation

Ayer, A. J. The Problem of Knowledge. Penguin Books, 1962.

Warning: These citations may not always be 100% accurate.