@book{25062,
	author = {Swokowski, Earl W. and Cole, Jeffery A.},
	title = {Algebra y trigonometría con geometría analítica},
	publisher = {Cengage Learning Editores},
	year = {2009},
	address = {México},
	edition = {12a ed.},
	url = {http://www.biblioises.com.ar/Contenido/500/510/algebra-y-trigonometria-.pdf}
}