Citation Hunt

The Wikipedia snippet below is not backed by a reliable source. Can you find one?

Click I got this! to go to Wikipedia and fix the snippet, or Next! to see another one. Good luck!

In page Drayton Park railway station:

"

After the war the plan to incorporate the Alexandra Palace branch into the Underground was cancelled and the branch closed to passengers in the 1950s. No further effort was made to connect the City Line to the main-line platforms (owned after the 1948 nationalisation by British Railways) and Northern line tube trains continued to run in tunnel to Finsbury Park.