@book{68911,
	author = {Olweus, Dan. and Filella, Roc,},
	title = {Conductas de acoso y amenaza entre escolares /},
	publisher = {Alfaomega,},
	year = {2005.},
	address = {México :},
	note = {Título original: Bullying at school. What we know and what we can do.}
}