BUILD SWITCH AND LOGIC GATES USING TRANSISTORS ON THE BREADBOARD: Project for Students, Hobbyists, and Electronics Enthusiasts : N H, Guruprasad: Amazon.com.tr: Kitap
Button and Switch Basics - SparkFun Learn
Breadboard-friendly SPDT Slide Switch : ID 805 : $0.95 : Adafruit Industries, Unique & fun DIY electronics and kits