APA (7th ed.) Citation

Smith, I. (2010). Happy: Simple steps to get the most out of life. St. Martin's Press.

Chicago Style (17th ed.) Citation

Smith, Ian. Happy: Simple Steps to Get the Most Out of Life. New York: St. Martin's Press, 2010.

MLA (8th ed.) Citation

Smith, Ian. Happy: Simple Steps to Get the Most Out of Life. St. Martin's Press, 2010.

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