@book{7737,
	author = {Stewart, James and  Lothar, Redlin, autor.},
	title = {Precálculo : matemáticas para el cálculo /},
	publisher = {Cengage Learning, },
	year = {2012.},
	series = {Matemáticas},
	address = {México, D. F. :},
	edition = {Sexta edición},
	note = {Incluye indice.}
}