Elsea, J.K. And Kim, J. (2007, January 23). Undisclosed UNITED STATES detention sites overseas: background and legal issues. CRS Report for Congress. Congressional Research Service. Retrieved November 29, 2007, at http://www.fas.org/sgp/crs/intel/RL33643.pdf
Grey, S. (2005, December 19). Torture's tipping point. New Statesman, pp. 24-25.
Grey, S. (2006, November 20). Missing presumed tortured. New Statesman, pp. 12-15.
Gutierrez, D. (2006, January-February). The extraordinary cruelty of "extraordinary rendition." The Humanist, pp. 11-15.