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 Gettysburg Address:

"

The importance of the Gettysburg Address in the history of the United States is underscored by its enduring presence in American culture. In addition to its prominent place carved into a stone cella on the south wall of the Lincoln Memorial in Washington, D.C., the Gettysburg Address is frequently referred to in works of popular culture, with the implicit expectation that contemporary audiences will be familiar with Lincoln's words.[citation needed]