APA (7th ed.) Citation

Grayling, A. C. (2009). Ideas that matter: A personal guide for the 21st century. Weidenfeld & Nicolson.

Chicago Style (17th ed.) Citation

Grayling, A. C. Ideas That Matter: A Personal Guide for the 21st Century. London: Weidenfeld & Nicolson, 2009.

MLA (9th ed.) Citation

Grayling, A. C. Ideas That Matter: A Personal Guide for the 21st Century. Weidenfeld & Nicolson, 2009.

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