Leyland Titan Technical Data(PDF). Southall: British Leyland UK. June 1978. Lit. No. 1683. Archived(PDF) from the original on 31 January 2022. Retrieved 21 December 2022.
"Class 140". The Railway Centre. Archived from the original on 9 March 2005.{{cite web}}: CS1 maint: unfit URL (link)
"Multiple Units". The Keith and Dufftown Railway. Archived from the original on 5 October 2007. Retrieved 3 October 2007.
Leyland Titan Technical Data(PDF). Southall: British Leyland UK. June 1978. Lit. No. 1683. Archived(PDF) from the original on 31 January 2022. Retrieved 21 December 2022.
worldcat.org
Fox, Peter (1987). British Railways Pocket Book No. 2: Multiple Units (Summer–Autumn 1987 ed.). Sheffield: Platform 5 Publishing. p. 40. ISBN0906579740. OCLC613347580.