Amazon.com: LEGO MINDSTORMS EV3 Building Set Includes 3 Interactive Servo Motors, Remote Control, Improved And Redesigned Color Sensor, Redesigned Touch Sensor, Infrared Sensor And 550+ LEGO Technic Elements : Toys & Games
The LEGO MINDSTORMS Robot Inventor Idea Book (Lego Technic): Isogawa, Yoshihito: 9781718501775: Amazon.com: Books
How to Build Cool LEGO Robots - Frugal Fun For Boys and Girls