Glee Watch: Season 4, Episode 20 - Lights Out | Cinemablend
Glee" Britney 2.0 (TV Episode 2012) - IMDb
Glee season finale recap: Season 5 finale | EW.com
Ryan Murphy On 'Glee' After Cory Monteith's Death & Impact On Season 5 – TVLine
Amazon.com: Glee: Season 6 : Jane Lynch, Lea Michele, Matthew Morrison, Chris Colfer, Dianna Agron, Dot-Marie Jones, Kevin McHale, Chord Overstreet, Amber Riley, Darren Criss, Heather Morris, Naya Rivera, Mark Salling, Jenna
Glee Season 4 Episode 20: "Lights Out" Photos - TV Fanatic
Naya Rivera Hasn't Been Fired From 'Glee,' Studio, Rep Say – The Hollywood Reporter