APA Edition Citation

Ayer, A. J. (1991). Central questions of philsophy. Penguin Books.

Chicago Edition Citation

Ayer, A. J. Central Questions of Philsophy. London: Penguin Books, 1991.

MLA Edition Citation

Ayer, A. J. Central Questions of Philsophy. Penguin Books, 1991.

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