Thrasher Presents: How to Build Skateboard Ramps, Halfpipes, Boxes, Bowls and More (Skate My Friend, Skate): Thatcher, Kevin: 9780965727143: Amazon.com: Books
Thrasher's: How to Build and Repair a Concrete Quarterpipe - YouTube
Building a Mini Ramp in Your Own Backyard – SkateboardersHQ