www.aqha.com : the American Quarter Horse Association www.apha.com : the American Paint Horse Association. www.nrha.com : the American Reining Horse Association www.brpg.com : the Belgian Reining Promotion Group www.nsba.be : the National Snaffle Bit Association www.prab.be : Pleasure Riding Association of Belgium. www.bqha.be : the Belgian Quarter Horse Association