Incoming Resources
- Helicopters, Kate Riggs
- Helicopters, by Darlene Stille
- Military helicopters, by Matt Doeden ; consulting editor, Gail Saunders-Smith
- Helicopters, by Jeffrey Zuehlke
- Helicopters, by Cari Meister
- Attack helicopters, the AH-64 Apaches, by Bill Sweetman
- Mighty machines, Super machines : apprendre, soulever et remorquer
- Batplanes and batcopters, the engineering behind Batman's wings, by Tammy Enz
- Rescue helicopters in action, by Becky Olien
- High-flying helicopters, Tony Mitton and Ant Parker
- Black Hawk helicopter, Henry M. Holden
- The Usborne book of planes and helicopters, Clive Gifford ; designed by Steve Page ; illustrated by Mark Franklin ; additional illustrations by Sean Wilkinson ; consultant: L. F. E. Coombs
- Lockheed AH-56A Cheyenne, by Tony Landis and Dennis R. Jenkins
- Helicopters, Emily Bone ; designed by Zoe Wray and Steve Wood ; illustrated by Staz Johnson, Giovanni Paulli and Adrian Roots ; edited by Alex Frith
- Helicopters, Kate Scarborough
- The world's fastest helicopters, by Glen and Karen Bledsoe
- Helicopters on the go, Beth Bence Reinke
- Choppers, by Susan Goodman ; photos by Michael Doolittle