@book{9407,
	author = {Leithold, Louis and Mata González, Fidencio, traductor},
	title = {Matemáticas previas al cálculo :},
	publisher = {Harla, },
	year = {1994},
	address = {México, D. F. México :},
	edition = {Tercera edición},
	note = {Título original. Before calculus : functions, graphs, and analytic geometry.}
}