Hendy, Peter (December 2013). "Commissioner's Report"(PDF). Transport for London. p. 5. Archived from the original(PDF) on 24 December 2013. Retrieved 21 December 2013.
"Rolling Stock: S stock". Transport for London. Archived from the original on 29 December 2013. Retrieved 10 January 2012. Note: The table erroneously says "Length per car", instead of "Length per train".
"Our Upgrade Plan"(PDF). Transport for London. February 2011. Archived from the original(PDF) on 17 August 2012. Retrieved 7 December 2012.
"Hammersmith to Edgware Road Circle line timetable". Transport for London. Retrieved 9 December 2012. In the Tube timetable - Tube station box select "Hammersmith (H&C Line)" and press Get Timetable. Select Edgware Road timetable and then view timetable.
Hendy, Peter (December 2013). "Commissioner's Report"(PDF). Transport for London. p. 5. Archived from the original(PDF) on 24 December 2013. Retrieved 21 December 2013.
"Rolling Stock: S stock". Transport for London. Archived from the original on 29 December 2013. Retrieved 10 January 2012. Note: The table erroneously says "Length per car", instead of "Length per train".
"Our Upgrade Plan"(PDF). Transport for London. February 2011. Archived from the original(PDF) on 17 August 2012. Retrieved 7 December 2012.