APA (7th ed.) Citation

Richard, C., & Hollowell, T. (2011). Barefoot running. Penguin Group (USA) Inc..

Chicago Style (17th ed.) Citation

Richard, Craig, and Thomas Hollowell. Barefoot Running. New York: Penguin Group (USA) Inc., 2011.

MLA (9th ed.) Citation

Richard, Craig, and Thomas Hollowell. Barefoot Running. Penguin Group (USA) Inc., 2011.

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