Joseph B Walker. (2003). Self defense techniques and tactics. Human Kinetics.
Chicago Edition CitationJoseph B Walker. Self Defense Techniques and Tactics. United States: Human Kinetics, 2003.
MLA Edition CitationJoseph B Walker. Self Defense Techniques and Tactics. Human Kinetics, 2003.
Advarsel: Disse citationer er muligvist ikke 100% nøjagtige.