"Producers David Benioff, Dan Weiss & George R.R. Martin Talk GAME OF THRONES Season 3 and 4, Martin’s Cameo, the End of the Series, and More". Interview with Christina Radish, collider.com. March 20, 2013.
George R. R. Martin (2011). “A Game of Thrones 4-Book Bundle: A Song of Ice and Fire Series: A Game of Thrones, A Clash of Kings, A Storm of Swords, and A Feast for Crows”, p.655, Bantam