Some Known Incorrect Statements About Largest Selection of Ninja Stars, Thowing Stars, & Shuriken! Seiko, Fujita (July 2020). Amazon Digital Provider LLC - KDP Print United States. ISBN 978-1-950959-22-8. Mol, Serge (2003 ). Classical weaponry of Japan: special weapons and methods of the martial arts. Tokyo: Kodansha International. pp. 159160. ISBN