@book{513,
	author = {Spiegel, Murray and Gutiérrez Díez, Luis; },
	title = {Álgebra superior /},
	publisher = {McGraw Hill,},
	year = {1991.},
	series = {A(serie de compendio schaum)},
	address = {México :},
	note = {Incluye apéndice}
}