http://web.grinnell.edu/courses/soc/s00/soc111-01/IntroTheories/Symbolic.html
http://is2.lse.ac.uk/asp/aspecis/20030155.pdf
http://en.wikipedia.org/wiki/Symbolic_interactionism
http://uregina.ca/~gingrich/319j3103.htm
http://www.people.fas.harvard.edu/~johnston/burke.pdf