(en)Barnett,Brooke;Reynolds,Amy(2009).Terrorism and the Press: An Uneasy Relationship.Mediating American History.3.New York:Peter Lang.str.22. i 42-43.ISBN9780820495163.OCLC237402533.
(en)Schleifer,Ron;Snapper,Jessica(2015).Advocating Propaganda – Viewpoints from Israel: Social Media, Public Diplomacy, Foreign Affairs, Military Psychology, and Religious Persuasion.Chicago:Sussex Academic Press.str.7, 30, 42, 126. i 174.ISBN9781845196721.OCLC882464478.