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 Charles XII of Sweden:

"

Charles fascinated many in his time. In 1731, Voltaire wrote a biography of Charles XII, History of Charles XII. Voltaire portrays the Swedish king in a positive light, against the brutal nature of Peter the Great.[1] The English man of letters Samuel Johnson wrote of Charles in his poem "The Vanity of Human Wishes":[citation needed]