Watford DC line (English Wikipedia)

Catford, Nick; Pearson, David (18 May 2017). "Disused Stations: Croxley Green Triangular Junction and Depot". Disused Stations. Archived from the original on 5 December 2022. Retrieved 11 February 2024.

newcivilengineer.com

McIntyre, Fiona (26 January 2018). "London mayor 'effectively abandons' £284M Met line extension". New Civil Engineer. Retrieved 11 February 2024.

Stacy, Mungo (25 February 2014). "25 years after Clapham - Pride turns to despair". Rail Engineer. Retrieved 3 November 2024.

UK, DVV Media. "Metropolitan Line Extension funding agreed". railwaygazette.com. Retrieved 24 March 2018.

Errata sheet for Volume 8 Signal Box Register London Transport - Index pages 49 and 64 https://www.s-r-s.org.uk/downloads/RegcorrsLT.pdf

Transport for London. "London Overground's new look". Transport for London. Retrieved 15 February 2024.
"Safety boost as London Underground to take control of 11 Silverlink stations". Transport for London. 5 December 2006. Archived from the original on 13 December 2014. Retrieved 19 February 2015.
"Naming London Overground lines". Transport for London. Retrieved 11 February 2024.
"Croxley Rail Link". tfl.gov.uk. Retrieved 24 March 2018.

Russell, Rachel. "The story of the Met Line extension project so far". Watford Observer. Archived from the original on 16 April 2018. Retrieved 16 April 2018.

"Safety boost as London Underground to take control of 11 Silverlink stations". Transport for London. 5 December 2006. Archived from the original on 13 December 2014. Retrieved 19 February 2015.
Catford, Nick; Pearson, David (18 May 2017). "Disused Stations: Croxley Green Triangular Junction and Depot". Disused Stations. Archived from the original on 5 December 2022. Retrieved 11 February 2024.
Russell, Rachel. "The story of the Met Line extension project so far". Watford Observer. Archived from the original on 16 April 2018. Retrieved 16 April 2018.

Marsden, Colin J. (2008). The DC Electrics. ISBN 9780860936152. OCLC 318668763.