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 Roy Jenkins:

"

Jenkins was educated at Pentwyn Primary School, Abersychan County Grammar School, University College, Cardiff, and at Balliol College, Oxford, where he was twice defeated for the Presidency of the Oxford Union, but took a first-class degree in Politics, Philosophy and Economics (PPE).[3] His university colleagues included Tony Crosland, Denis Healey and Edward Heath, and he became friends with all three, although he was never particularly close to Healey.[citation needed]