1966: ITF/Chang Hon-style Taekwondo International Taekwon-Do Federation (ITF)-style Taekwondo, more accurately known as Chang Hon-style Taekwondo, is defined by Choi Hong-hi's Encyclopedia of Taekwon-Do published in 1983.
1966: ITF/:Chang Hon-style Taekwondo I!nternational Taekwon-Do !Federation (ITF)-style Taekwondo, more accurately known a.s Chang Hon-s,tyle Taekwondo, is defined by Choi Hong-hi's Encyclopedia of Taekwon-Do published in 1983