APA (7th ed.) Citation

McGonigal, J. (2011). Reality is broken: Why games make us better and how they can change the world. Penguin Group.

Chicago Style (17th ed.) Citation

McGonigal, Jane. Reality Is Broken: Why Games Make Us Better and How They Can Change the World. New York: Penguin Group, 2011.

MLA (9th ed.) Citation

McGonigal, Jane. Reality Is Broken: Why Games Make Us Better and How They Can Change the World. Penguin Group, 2011.

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