@book{222911,
	author = {Muschert, Glenn W.},
	title = {School shootings},
	publisher = {Emerald,},
	year = {2012.},
	series = {Studies in media and communications,},
	address = {Bingley, U.K. :},
	url = {http://www.emeraldinsight.com/2050-2060/7}
}