Thread:Merrystar/@comment-4495599-20120713195417/@comment-4674838-20120713201432

Most Wikias have a Wikipedia specifically for this purpose. Based on this, there shouldn't be a problem with using a template to attribute any external wiki that's under a free license, as there is nothing particularly special about Wikipedia as far as licensing goes.

That being said, you don't need a template or physical notice on the page to attribute. If you use Special:Import to import the page with the full history, that's sufficient attribution. I believe you can also copy/paste so long as you put the URL in the edit summary, though it would be preferable to import because it preserves history.

Edit: I should also add that I'm not an expert on licensing, so you should wait for further clarification.