Final airdate reference? 

I'm confused as to whether ref. #1 should stay or be removed? I have no reason to doubt that her final contract appearance was Sept. 7, 2005 (in fact, I do know it was in 2005 so whoever wrote that probably knew Sept. 7th to be correct as well) but, the ref. cited neither confirms nor denies it so should the link be removed? I don't really know much about referencing. Thanks in advance to any who respond.