Forum:ISBN numbers and BookSources

Ventry Girl made an update to The Coming of the Terraphiles that included QuickLink brackets around the ISBN numbers. I noticed they were red links, so I backed out the brackets and noticed that Wikia makes it into a link just from plain text.

When I click on the link for those ISBNs, they go to a special:BookSources page, and thence to a few different book sellers. Most of those book sellers are either offline or no longer recognize the URLs we send them.

Who is in charge of those links: Tardis or Wikia? Who would be the one to get those fixed/updated?