Coba jelasin Sumber dari Yasuhiro Konishi dong

Ancient Okinawan Martial Arts, Volume 2: Koryu Uchinadi by Patrick McCarthy [Book]. Boston, MA: Tuttle Publishing. 1999

Japanese Karate, Volume 1: Shindo Jinen Ryu. [Motion Picture]. Thousand Oaks, CA: Tsunami Productions. 1998

Japanese Karate, Volume 2: Ryobukai and Shotokan. [Motion Picture]. Thousand Oaks, CA: Tsunami Productions. 1998

Japan Karate-Do Ryobu-Kai Instructors Manual. 1996

Black Belt Karate by Chris Thompson [Book]. London, UK: New Holland Publishers. 2008