Staff (March 12, 2012). "Colonel Chris Gibson". Hoover Institute. Board of Trustees of Leland Stanford Junior University. Archived from the original on April 15, 2013. Retrieved January 27, 2013.
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The Hoover Institute (2010). "Colonel Chris Gibson". The Hoover Institute. Archived from the original on 15 April 2013. Retrieved 14 September 2010.