@book{37092,
	author = {Boltanski, Luc and Porter, Catherine},
	title = {On justification  economies of worth},
	publisher = {Princeton University Press},
	year = {2006},
	address = {Princeton (Nueva Jersey, Estados Unidos)},
	url = {http://www.loc.gov/catdir/toc/ecip0516/2005020884.html}
}