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.725, Bantam
Diana Gabaldon (2015). “The Outlander Series Bundle: Books 1, 2, 3, and 4: Outlander, Dragonfly in Amber, Voyager, Drums of Autumn”, p.2325, Delacorte Press