APA (7th ed.) Citation

Wilkinson, R. G., Pickett, K., & Chafer, C. (2011). The spirit level: Why greater equality makes societies stronger. Tantor Media, Inc..

Chicago Style (17th ed.) Citation

Wilkinson, Richard G., Kate Pickett, and Clive Chafer. The Spirit Level: Why Greater Equality Makes Societies Stronger. [Old Saybrook, Ct.]: Tantor Media, Inc., 2011.

MLA (8th ed.) Citation

Wilkinson, Richard G., et al. The Spirit Level: Why Greater Equality Makes Societies Stronger. Tantor Media, Inc., 2011.

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