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 Microsoft Windows:

"

Up to and including every version before Windows 2000, Microsoft used an in-house version control system named Source Library Manager (SLM). Shortly after Windows 2000 was released, Microsoft switched to a fork of Perforce named Source Depot.[1] This system was used up until 2017 once the system could not keep up with the size of Windows.[citation needed] Microsoft had begun to integrate Git into Team Foundation Server in 2013,[2] but Windows (and Office) continued to rely on Source Depot.[3] The Windows code was divided among 65 different repositories with a kind of virtualization layer to produce unified view of all of the code.[citation needed]