"Chapter 7.3–The Attack Looms, Assembling the Teams". 9/11 Commission Report. National Commission on Terrorist Attacks Upon the United States. m/s. 231–240. Diarkibkan daripada yang asal pada 2013-10-23. Dicapai pada 2008-09-30.
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"Chapter 7.3–The Attack Looms, Assembling the Teams". 9/11 Commission Report. National Commission on Terrorist Attacks Upon the United States. m/s. 231–240. Diarkibkan daripada yang asal pada 2013-10-23. Dicapai pada 2008-09-30.