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 Cromwell's Castle:

"

In 1739, the War of Jenkins' Ear broke out between Britain and Spain, and the decision was taken to improve the defences at Cromwell Castle.[3] Abraham Tovey, the Master Gunner at the nearby fortification known as the Garrison, constructed a large gun-platform for a battery of six guns on the south-west side of the tower, possibly on top of any pre-existing 16th-century platform.[4] A parapet protected the guns, a new entrance was cut into the main tower and other adjustments made.[5]