Ninjutsu: The Art of Invisibility (Facts, Legends, and Techniques)

The Illustrated Ninja Handbook: Hidden Techniques of Ninjutsu

Comprehensive Asian Fighting Arts (Bushido--The Way of the Warrior)

The Ninja Mind: Harnessing the Mental Strength and Physical Abilities of the Ninjutsu Masters

Classical Bujutsu (Martial Arts and Ways of Japan)

The Grandmaster's Book of Ninja Training

The Ninja, The Secret History of Ninjutsu: Ancient Shadow Warriors of Japan

Ninja: The Invisible Assassins

Bokuden Ryu Jujutsu: A Record of Intensive Lessons in Jujutsu with Additional Secret Teachings on Resuscitation

The Complete Ninja: The Secret World Revealed

The Mystic Arts of the Ninja

The Illustrated Ninja Handbook: Hidden Techniques of Ninjutsu

Comprehensive Asian Fighting Arts (Bushido--The Way of the Warrior)

The Ninja Mind: Harnessing the Mental Strength and Physical Abilities of the Ninjutsu Masters

Classical Bujutsu (Martial Arts and Ways of Japan)

The Grandmaster's Book of Ninja Training

The Ninja, The Secret History of Ninjutsu: Ancient Shadow Warriors of Japan

Ninja: The Invisible Assassins

Bokuden Ryu Jujutsu: A Record of Intensive Lessons in Jujutsu with Additional Secret Teachings on Resuscitation

The Complete Ninja: The Secret World Revealed

The Mystic Arts of the Ninja