Owen, Richard. 1995 Ferrari FX // Supercars.net. Supercars.net. Посетен на 21 юли 2012. For reasons we don't know, number four of seven was still being finished at Williams when the Sultan stopped his influx of cars and anything else expensive.
Ferrari FZ93 // Supercars.net, 1 март 2004. Посетен на 15 май 2010.