Kitbashing

Books

How to Kitbash Structures - Model Railroader

How To Build Dioramas: Aircraft, Armor, Ship, and Figure Models - Sheperd Paine - Kalmbach Books; 2 edition (December 1, 1999)

Building Dioramas - Chris Mrosko - Kalmbach Publishing Company (May 1, 2014)

Scratch Building

Supplies

Builder's In Scale
HobbyLinc Scratch Build Supplies
Micro Mark