References
- Anderson, C. (2006) The Long Tail: Why the Future of Business is Selling Less of More. New York: Hyperion.
- Duggan, M. & Smith, A. (2014) Social media update 2013. Pew Research Center, January. Available online at: http://pewinternet.org/Reports/2013/Social-Media-Update.aspx (accessed 10 January 2014).
- Gladwell, M. (2000) The Tipping Point: How Little Things Can Make a Big Difference. Boston: Brown.