1. Castells M. Mobile Communication and Society: A Global Perspective. Cambridge, Massachusetts: MIT Press; 2011
2. McLuhan M, Force B. The Global Village: Transformations in World Life and Media in the 21st Century. Oxford: Oxford University Press; 1988
3. McLuhan M. The Gutenberg Galaxy: The Making of Typographic Man. Toronto: University of Toronto Press; 2011
4. McChesney RW. Rich Media Poor Democracy: Communication Politics in Dubious Times. New York: The New Press; 2000
5. Entman RM. Cascading activation: Contesting the White House’s frame after 9/11. Political Communication. 2003;20(4):415-432