↑Davies, F. K. (1956) [1952]. The Locomotives of the Great Western Railway, part eleven: The Rail Motor Vehicles and Internal Combustion Locomotives (2nded.). Railway Correspondence and Travel Society. pp.23–24.ISBN0-901115-38-X
↑Strickland, D.C. (1982). Locomotive directory: every single one there has ever been. Camberley: Diesel and Electric Group. p.62. ISBN0-906375-10-X.
↑Marsden, Colin (1981). A pictorial history of the diesel shunter. Oxford: Oxford Publishing. Plate 41. ISBN0-86093-108-0.