@book{33116,
	author = {Purcell, Edwing Joseph, 1901 -  and Varberg, Dale E.},
	title = {Cálculo diferencial e integral / },
	publisher = {Pearson Educación, },
	year = {2007.},
	address = {México : },
	edition = {9a. ed.},
	note = {Incluye índice.}
}