George R. R. Martin (2012). “George R. R. Martin's A Game of Thrones 5-Book Boxed Set (Song of Ice and Fire Series): A Game of Thrones, A Clash of Kings, A Storm of Swords, A Feast for Crows, and and A Dance with Dragons”, p.1402, Bantam
"Interviews: ‘Arthur Christmas’ Star Bill Nighy & Director Sarah Smith Discuss Their New Holiday Movie". Interview with Drew Taylor, www.indiewire.com. November 23, 2011.