APA (7th ed.) Citation

Richards, G. (2009). Psychology: The key concepts. Routledge.

Chicago Style (17th ed.) Citation

Richards, Graham. Psychology: The Key Concepts. London ; New York: Routledge, 2009.

MLA (9th ed.) Citation

Richards, Graham. Psychology: The Key Concepts. Routledge, 2009.

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