IJF Rules Modifications For 2013 - 2016
 IJF Refereeing and Competition Rules Modifications For 2013 - 2016
 Videos of the refereeing rule


Links
 Chicago Judo Black Belt Assoication (CJBBA)
 Chicago Aikido Club
 USA Judo
 United States Judo Federation (USJF)
 International Judo Federation (IJF)
 IJF Grand Masters Commission
 Judo Information Site
 United States Judo Association (USJA)
 World Masters Judo Association