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 SR.N4:

"

In August 1968, the first SR.N4 entered commercial service with the GH-2006 Princess Margaret being initially operated by Seaspeed between Dover and Boulogne.[citation needed] Rival operator Hoverlloyd built the world's first purpose-built hoverport at Ramsgate Hoverport, specifically designed for the SR.N4, to also serve the Calais route.[citation needed]