Small shunters: under 300 hp List of British Rail modern traction locomotive classes

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^ strickland (1983), p. 140.
^ strickland (1983), p. 47.
^ williams & percival (1962).
^ strickland (1983), p. 45.
^ all-time guide uk traction classification system part 2: locomotives (pdf). railwaycentre.org. 2006-05-02. retrieved 2007-02-18. 
^ strickland (1983), p. 46.
^ trc - classification: part 2 (2006).
^ strickland (1983), p. 44–45.
^ strickland (1983), p. 43.
^ strickland (1983), p. 31–35.
^ strickland (1983), p. 35–39.
^ strickland (1983), p. 40.
^ strickland (1983), p. 41.
^ strickland (1983), p. 41–43.
^ strickland (1983), p. 43–44.
^ d2708-d2780 . therailwaycentre.com. archived original on 7 february 2009. retrieved 2007-02-22. cs1 maint: unfit url (link)
^ d2999 . therailwaycentre.com. retrieved 2017-12-01. 
^ d2510-d2519 . therailwaycentre.com. archived original on 7 february 2009. retrieved 2007-02-22. cs1 maint: unfit url (link)
^ strickland (1983), p. 46–47.
^ d2900-d2913 . therailwaycentre.com. archived original on 7 february 2009. retrieved 2007-02-22. cs1 maint: unfit url (link)
^ all-time guide uk traction classification system part 1: pre tops class systems (pdf). railwaycentre.org. 2006-05-02. retrieved 2007-02-18. 






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