APA (7th ed.) Citation

Scruton, R. (1999). An intelligent person's guide to philosophy. Penguin Books.

Chicago Style (17th ed.) Citation

Scruton, Roger. An Intelligent Person's Guide to Philosophy. New York: Penguin Books, 1999.

MLA (9th ed.) Citation

Scruton, Roger. An Intelligent Person's Guide to Philosophy. Penguin Books, 1999.