JKA World Headquarters www.jka.or.jp/english/e_index.html
JKA American Federation http://jkaaf.org/index.html
Best Books on JKA/Shotokan Karate
1. M. Nakayama: Dynamic Karate
2. M. Nakayama: Best Karate- Volume 1 to 11
3. Japan Karate Association: Karate-do Kata Volume 1, 2
4. M. Nakayama: Practical Karate: Book I to VI.
5. K. Enoeda: Shotokan Karate Free Fighting
6. M. Tanaka: Karate-do - Perfecting Kumite
7. G. Funakoshi: Karate-do Kyohan
8. G. Funakoshi: My Way Of Life