"Sewta Rail Strategy Study"(PDF). Jacobs Consultancy, Sewta Rail Strategy Study, Executive Summary. South East Wales Transport Alliance. 2006. Archived from the original(PDF) on 28 March 2007. Retrieved 11 March 2015.
"Sewta Rail Strategy Study"(PDF). Jacobs Consultancy, Sewta Rail Strategy Study, Executive Summary. South East Wales Transport Alliance. 2006. Archived from the original(PDF) on 28 March 2007. Retrieved 11 March 2015.