Vehicle Diagram Book No. 210 for Electric Multiple Units (including A.P.T.)(PDF). Derby: Mechanical & Electrical Engineering Department, British Railways Board. EC203, EC206, EE218, EE226, EH219, EH221, EH224 (in work pp. 76–77, 82–83, 150–151, 166–167, 292–295, 300–301). Archived from the original(PDF) on 21 January 2015. Retrieved 24 January 2022 – via Barrowmore MRG.
McCrickard, John P. (6 October 2016). "January 1990 to December 1990". Network South East Railway Society. Archived from the original on 26 June 2018. Retrieved 26 June 2018.
Vehicle Diagram Book No. 210 for Electric Multiple Units (including A.P.T.)(PDF). Derby: Mechanical & Electrical Engineering Department, British Railways Board. EC203, EC206, EE218, EE226, EH219, EH221, EH224 (in work pp. 76–77, 82–83, 150–151, 166–167, 292–295, 300–301). Archived from the original(PDF) on 21 January 2015. Retrieved 24 January 2022 – via Barrowmore MRG.
McCrickard, John P. (6 October 2016). "January 1990 to December 1990". Network South East Railway Society. Archived from the original on 26 June 2018. Retrieved 26 June 2018.