Trade Center - Building Performance Study, FEMA Fulmer, John (September 2004) "Verizon Building Stands Tall After Attack", Electrical Contractor Verizon Headquarters
(原始内容存档于2018-03-16). World Trade Center: Dulles Airport at One Loudoun. dullesworldtrade.com. 2009 [2010-07-14]. (原始内容存档于March 7, 2010). Verizon Business Global Llc