APA (7th ed.) Citation

Ayer, A. J. (1976). The central questions of philosophy. Penguin Books.

Chicago Style (17th ed.) Citation

Ayer, A. J. The Central Questions of Philosophy. Harmondsworth: Penguin Books, 1976.

MLA (8th ed.) Citation

Ayer, A. J. The Central Questions of Philosophy. Penguin Books, 1976.

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