@book{1409,
	author = {Sobel, Max A. and Lerner, Norbert},
	title = {Álgebra},
	publisher = {Prentice-Hall Hispanoamericana},
	year = {1996},
	address = {México :},
	edition = {4a. ed},
	url = {https://biblioeco.unsa.edu.ar/pmb/images/libros/Algebra 4ed.jpg}
}