↑ "Bin Laden claims responsibility for 9/11". CBC News. 29 Oktober 2004. Dicapai 11 Januari 2009. al-Qaeda leader Osama bin Laden appeared in a new message aired on an Arabic TV station Friday night, for the first time claiming direct responsibility for the 2001 attacks against the United States.
↑ "Security Council Condemns, 'In Strongest Terms', Terrorist Attacks on the United States". United Nations. September 12, 2001. Dicapai September 11, 2006. The Security Council today, following what it called yesterday’s "horrifying terrorist attacks" in New York, Washington, D.C., and Pennsylvania, unequivocally condemned those acts, and expressed its deepest sympathy and condolences to the victims and their families and to the people and Government of the United States.
↑ "PartIIC - WTC 7 Collapse" (PDF). NIST Response to the World Trade Center Disaster. National Institute of Standards and Technology. 2005-04-05. Dicapai 2006-11-01.
