@book{86666,
	author = {Hassard, Jack. and Dias, Michael },
	title = {The art of teaching science :},
	publisher = {Routledge,},
	year = {2009.},
	address = {New York :},
	edition = {Second edition},
	url = {http://www.loc.gov/catdir/toc/ecip0813/2008011236.html}
}