APA (7th ed.) Citation

Rotella, R. J., & Cullen, R. (2008). Your 15th club: The inner secret to great golf. Free Press.

Chicago Style (17th ed.) Citation

Rotella, Robert J., and Robert Cullen. Your 15th Club: The Inner Secret to Great Golf. New York: Free Press, 2008.

MLA (8th ed.) Citation

Rotella, Robert J., and Robert Cullen. Your 15th Club: The Inner Secret to Great Golf. Free Press, 2008.

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