|This article needs additional citations for verification. (September 2016) (Learn how and when to remove this template message)|
- "he History, Principles and Precepts of Sakugawa Koshiki Shorinji-Ryu Karate-Do". Ogasawara-Ha Shorinji Ryu Home Page. Retrieved 9 September 2016.
- Jones, David. "Martial Arts Training in Japan: A Guide for Westerners". Google Books. Tuttle Publishing. Retrieved 9 September 2016.
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