Pat Conroy (2016). “The Great Santini, The Lords of Discipline, and The Prince of Tides: Three Classic Novels in One Collection”, p.597, Open Road Media
Charles Darwin (1861). “On the Origin of Species by Means of Natural Selection; Or, The Preservation of Favoured Races in the Struggle for Life”, p.167
"The Gitmo Experiment: How Methods Developed by the U.S. Military For Withstanding Torture are Being Used Against Detainees at Guantanamo Bay". "Democracy Now!" with Amy Goodman, www.democracynow.org. July 6, 2005.
"On the Relative Motion of the Earth and the Luminiferous Ether". Article by by Albert A. Michelson and Edward W. Morley. American Journal of Science, 1887, 34 (203), p. 341, en.wikisource.org. 1887.