Recommended reading
| The Way of the Ninja: Secret Techniques | Japanese Sword Fighting: Secrets of the Samurai |
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| Understand? Good Play!: Words of Consequence |
Secrets from the Ninja Grandmaster: Revised and Updated Edition |
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| Ninjutsu History and Tradition | Essence of Ninjutsu - The Nine Traditions |
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| The Grandmaster's Book of Ninja Training | Stick Fighting: Techniques of Self-Defense |
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