Marshall. Prosecution of Computer (PDF). justice.gov. Office of Legal Education Executive Office for United States Attorneys. 2010 [June 3, 2013]. (原始内容
National Library Board Singapore, 2009. Chan, Helena H[ui-]M[eng], The Executive, The Legal System of Singapore, Singapore: Butterworths Asia: 22–29, 1995,
Center, November 4, 2002. See also Ford's 1976 executive order (页面存档备份,存于互联网档案馆). However, Executive Order 12333, which prohibited the CIA from assassinations