GURPS Dragons™ is a supplement for the 3rd Edition of the GURPS role-playing game, published by Steve Jackson Games in 2004 and written by Phil Masters. But as the second to last book of Third Edition it has appendix that has 4th Edition conventions of the book's statistics.
GURPS Dragons discusses dragon in all forms. How dragons' affect the world by their presence. How to make Dragon Characters, Dragon tactics, and their Slayers.