The book of knowledgede B. J. PennMateriasHand-to-hand fightingMartial artsSelf-defenseMixed martial artsEdiciones (1)Mixed Martial Arts (2007)Victory Belt Publishing · inglés · ISBN 9780977731565Más obras de B. J. PennWhy I fightBBrazilian Jiu-JitsuBrazilian Jiu-JitsuVer todas las obras de B. J. Penn →