Seth's advice regarding FIFA and IFAB are solid. I'd also check out the US Soccer Federation as they publish Advice to Referees and issue interpretations for the USSF sanction.
Might I recommend looking at the National Federation of High School Associations as well? They have a lot of information regarding their various committees and how rule changes are proposed, voted on and considered. The NFHS impacts quite a few more participants than the professional leagues.
Good luck on your paper!
__________________
Even if you’re on the right track, you’ll get run over if you just sit there. - Will Rogers
|