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 M26 Pershing:

"

With the marked decrease in tank to tank actions, the automotive deficiencies of the M26 in the mountainous Korean terrain became more of a liability, and so all M26s were withdrawn from Korea during 1951 and replaced with M4A3 Shermans and M46 Pattons.[9] The M45 howitzer tank variant was only used by the assault gun platoon of the 6th Medium Tank Battalion, and these six vehicles were withdrawn by January 1951.[10]