Laws of the Game
AskTheRef, Burtrand World: Offside Rule, FIFA.com: Laws of the Game, Soccer Referee Info, Soccer Rules Page
Dansk Dommerfomidlign REFEX
An organisation for the international exchange of referees for youth tournaments.
J.A.S.O.A. Soccer Referee site
The overseas branch of the US Soccer federation referees in Yokosuka Japan.
Reference Point System
An optical system developed in Norway which makes judging offside easier. Diagrams, reports, testing, and contact details.
The Last Word
This site is visited by referees from around the world. The forum is especially popular, with discussions on a variety of topics going on all the time.