ASIN B0000CJGHS. Jackson, Alan. London's Metropolitan Railway. David & Charles. 1986. ISBN 0-7153-8839-8. Rose, Douglas. The LondonUnderground: A Diagrammatic History
history of London Transport Surface Rolling Stock. Capital Transport. 1983. ISBN 978-0-904711-45-5. Green, Oliver. The LondonUnderground: An illustrated
[2017-03-02]. (原始内容存档于2012-03-04). Nick, Cooper. Attacks on the LondonUnderground. The Underground at War. 2006-06-05 [2017-03-02]. (原始内容存档于2010-04-23). 存档副本
of London Transport Surface Rolling Stock. Capital Transport. 1983. ISBN 0-904711-45-5. Day, John R.; Reed, John. The Story of London's Underground 11th