Incoming Resources
- Real ultimate power, the official ninja book, by Robert Hamburger
- Ninja warriors, by Jody Jensen Shaffer
- Unarmed fighting techniques of the samurai, Masaaki Hatsumi ; photos by Mizuho Kuwata and Minoru Hirata ; translated by Doug Wilson, Bruce Appleby, and Craig Olson
- Life as a ninja, an interactive history adventure, by Matt Doeden
- Where in the world can I ... become a ninja?, Shawn Brennan, writer
- Team ninja, Written by Catherine Saunders