@book{20235,
	author = {Spiegel, Murray R.},
	title = {Estadística /},
	publisher = {McGraw-Hill,},
	year = {1997.},
	series = {Schaum},
	address = {Madrid ;},
	edition = {2a ed.},
	note = {Estado de la obra: Yujra, L. E.}
}