ISBN 978-0-07-028121-9 ^ SteveColl (March 12, 2007). “The Unthinkable”. The New Yorker. http://www.newyorker.com/reporting/2007/03/12/070312fa_fact_coll?printable=true
Infoplease. January 20, 2008時点のオリジナルよりアーカイブ。May 26, 2010閲覧。 ^ a b c d SteveColl (December 12, 2005). “Letter From Jedda: Young Osama- How he learned radicalism
oregonlive.com/blazers/oregonian/index.ssf?/base/sports/122568450442960.xml&coll=7 23 April 2010閲覧. "and his West Linn home is theirs to visit should they