13, 2010 .   ^ a b Elodie Keene (director), Ryan Murphy (writer) (December 2, 2009). " Mattress ". Glee . episode 12. season 1. Fox .   ^ Martin, Denise (March 17, 2011). "Prepare yourselves for Sue's League of Doom." . TV Guide . http://www.tvguide.com/News/Glee-Spoilers-PaleyFest-1030786.aspx . Retrieved September 10, 2011