APA (7th ed.) Citation

Langer, E. J. (2009). Counter clockwise: Mindful health and the power of possiblity. Ballantine Books.

Chicago Style (17th ed.) Citation

Langer, Ellen J. Counter Clockwise: Mindful Health and the Power of Possiblity. New York: Ballantine Books, 2009.

MLA (9th ed.) Citation

Langer, Ellen J. Counter Clockwise: Mindful Health and the Power of Possiblity. Ballantine Books, 2009.