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 Pentland Firth:

"

The name is presumed to be a corruption of the Old Norse "Petlandsfjörð",[1] meaning "the fjord of Pictland", and is completely unrelated to the Pentland Hills near Edinburgh.[citation needed]