"2nd Joel Silver Interview NINJA ASSASSIN. Plus Info on Dark Castle Projects, Remakes, SHERLOCK HOLMES, More". Roundtable interview, collider.com. November 24, 2009.
Diana Gabaldon (2015). “The Outlander Series 8-Book Bundle: Outlander, Dragonfly in Amber, Voyager, Drums of Autumn, The Fiery Cross, A Breath of Snow and Ashes, An Echo in the Bone, Written in My Own Heart's Blood”, p.2395, Dell