@book{38566,
	author = {Bernal, Jorge,},
	title = {Contrahipotesis.},
	publisher = {Nobuko,},
	year = {[2009]},
	address = {Buenos Aires, Argentina :},
	url = {https://login.zproxy.cun.edu.co/login?url=https://www.digitaliapublishing.com/a/34236/}
}