1. "Fiberglass Repair and Refinishing" by Don Vandervort
2. "Fiberglass Bathtub Repair Manual" by Larry C. Williams
3. "Fiberglass Boat Repair Manual" by Larry C. Williams
4. "The Complete Guide to Fiberglass Repair" by Jim Huling
5. "Step-by-Step Fiberglass Repair" by John White
These books provide step-by-step instructions, diagrams, and photos to guide you through the process of fiberglass tub repair. They cover topics such as identifying fiberglass damage, preparing the surface, applying fiberglass patches, resin application, sanding, and finishing. Some books also include tips on bathtub reglazing and maintenance.