"Edward Snowden on Why He Stood Up to the NSA: Mass Spying "Not Something I’m Willing to Live Under"". Interview with Amy Goodman, Juan González, www.truth-out.org. July 10, 2013.
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.21, Dell