(en) Debbie Wilgoren, Nick Miroff et Robin Shulman, « Pentagon Memorial Dedicated on 7th Anniversary of Attacks », The Washington Post, WashingtonPost.com, (lire en ligne, consulté le )
(en) Dwyer, Timothy, « Groundbreaking For 9/11 Memorial at Pentagon », The Washington Post, (lire en ligne)
(en) « Visitor Services: Pentagon Tours and Memorial: Pentagon Memorial », United States Department of Defense Washington Headquarters Services (consulté le ) For hours of operation, click on "Hours of Operation"; for photography information, click on "Conduct on the Pentagon Reservation". Both are under the "Pentagon Memorial" tab.
