@book{780,
	author = {Leithold, Louis and Mata González, Fidencio},
	title = {Matemáticas previas al cálculo},
	publisher = {Oxford University Press},
	year = {1998},
	address = {México :},
	edition = {3a. ed.},
	url = {https://biblioeco.unsa.edu.ar/pmb/images/libros/Matem?ticas Previas al Calculo.jpg}
}