Center Point Saddle Club, Iowa, Indiana Saddle Horse Association, Kansas Saddle Horse Association, Maryland Horse Shows Association, Missouri Horse Shows Association, Missouri's South Central Horse Show Associati, New Jersey Horse Shows Association, Inc., North County Horse Show Association, South Central Horse Show Association, The Desert Show Horse Association

Horse Show Central, HorseDates, SportHorse1.com, The Classic Company, The Show Ring, WebSouthWest

4H Horse Show Judging Standards, Horse Show Judging and Training

BETA International, Equiticket, Post Entry Horse Show Management

Europe, North America