Incoming Resources
- Ninjas, Rupert Matthews
- Modern ninja warfare, ninja tactics for the modern warrior, Antony Cummins
- Ninja, by Adrienne Lee
- Ninja warriors, by Jody Jensen Shaffer
- Where in the world can I-- become a ninja?, Shawn Brennan, writer
- Ninja, Gail Terp
- Ninjas, masters of stealth and secrecy, Patricia Dawson
- The ancient art of ninja warfare, combat, espionage, and traditions, Stephen K. Hayes ; [all line drawings by Greg Manchess, karsji drawn by Rumiko Hayes]
- Ninjutsu, the art of the invisible warrior, Stephen K. Hayes
- Ninjas, masters of stealth and secrecy, Joanne Mattern
- The invisible fist, secret Ninja methods of vanishing without a trace, Ashida Kim
- Be a hero!, the essential survival guide to active-shooter events, John Geddes and Alun Rees ; foreword by Don Mann