APA Citation

Ayer, A. J. 1., & Ayer, A. J. 1. (1956). The problem of knowledge. Harmondsworth, Middlesex, England: Penguin Books.

Chicago Style Citation

Ayer, Alfred Jules 1910-1989, and Alfred Jules 1910-1989 Ayer. The Problem of Knowledge. Harmondsworth, Middlesex, England: Penguin Books, 1956.

MLA Citation

Ayer, Alfred Jules 1910-1989, and Alfred Jules 1910-1989 Ayer. The Problem of Knowledge. Harmondsworth, Middlesex, England: Penguin Books, 1956.

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