NCAA rules - updated to link to the pdf file 1 December 2009
Gridiron Australia
State Gridiron Officials Associations:Victorian Gridiron Officials - being updated 1 December 2009Queensland Gridiron OfficialsSouth Australian Gridiron Officials
State Gridiron Associations:Gridiron QueenslandGridiron WestGridiron VictoriaGridiron South AustraliaNew South Wales Gridiron Football LeagueACT Gridiron
Worldwide links (a comprehensive list of American football sites around the world can be found here)Australian Gridiron Coaches AssociationNew Zealand American Football Association
BAFRA (British American Football Referees Association)
EFAF (European Federation of American Football)
IFAF (International Federation of American Football)
NZGOA (New Zealand Gridiron Officials Association)