APA (7th ed.) Citation

World Martial Arts & Hall, R. (2009). Fifty/fifty guard: 50/50 [logo] : Brazilian jiu-jitsu (Special edition.). World Martial Arts International, Ltd..

Chicago Style (17th ed.) Citation

World Martial Arts and Ryan Hall. Fifty/fifty Guard: 50/50 [logo] : Brazilian Jiu-jitsu. Special edition. [Boca Raton, Florida]: World Martial Arts International, Ltd., 2009.

MLA (9th ed.) Citation

World Martial Arts and Ryan Hall. Fifty/fifty Guard: 50/50 [logo] : Brazilian Jiu-jitsu. Special edition. World Martial Arts International, Ltd., 2009.