«Gladdis buoyed by Snetterton pace». FIA Formula Two Championship (MotorSport Vision). 9 de abril de 2010. Archivado desde el original el 15 de abril de 2010. Consultado el 15 de abril de 2010. «Gladdis is making final arrangements in order to contest the entire 2010 season, but he is confident of making a strong start to the year at Silverstone, and admits he already has a very good feeling of the new Williams JPH1B F2 car.»
«Gladdis buoyed by Snetterton pace». FIA Formula Two Championship (MotorSport Vision). 9 de abril de 2010. Archivado desde el original el 15 de abril de 2010. Consultado el 15 de abril de 2010. «Gladdis is making final arrangements in order to contest the entire 2010 season, but he is confident of making a strong start to the year at Silverstone, and admits he already has a very good feeling of the new Williams JPH1B F2 car.»