APA (7th ed.) Citation

Martens, R., & Martens, J. S. (2011). Complete guide to slowpitch softball. Human Kinetics.

Chicago Style (17th ed.) Citation

Martens, Rainer, and Julie S. Martens. Complete Guide to Slowpitch Softball. Champaign, IL: Human Kinetics, 2011.

MLA (9th ed.) Citation

Martens, Rainer, and Julie S. Martens. Complete Guide to Slowpitch Softball. Human Kinetics, 2011.