6" . TV by the Numbers . Zap2it . http://tvbythenumbers.zap2it.com/2012/09/24/greys-anatomy-full-season-8-available-online-at-abc-comgreysanatomy-through-october-6/150055/ . Retrieved September 26, 2012 .   ^ "Grey's Anatomy, Season 8" . iTunes . Apple . http://itunes.apple.com/us/tv-season/greys-anatomy-season-8/id460131426 . Retrieved May 27, 2012 .   ^ "Grey's Anatomy Season 7, Ep. 3 'Superfreak'" . Amazon Instant Video . Amazon.com . http://www.amazon.com/Superfreak/dp/B0046FA6EU