@book{60151,
	author = {Guzzini, Stefano.},
	title = {Constructivism and international relations :},
	publisher = {Routledge,},
	year = {2006.},
	address = {New York, NY :},
	url = {http://www.loc.gov/catdir/toc/ecip0512/2005014086.html}
}