APA Citation

Ayer, A. J. (1980). The Problem of knowledge (1st Ed.). London: Penguin Books.

Chicago Style Citation

Ayer, A J. The Problem of Knowledge. 1st Ed. London: Penguin Books, 1980.

MLA Citation

Ayer, A J. The Problem of Knowledge. 1st Ed. London: Penguin Books, 1980.

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