@book{7332,
	author = {Zill, Dennis G. and Dewar, Jacqueline M.},
	title = {Álgebra y trigonometría /},
	publisher = {McGraw-Hill, },
	year = {1999},
	address = {Santa Fe de Bogotá :},
	edition = {Segunda edición},
	note = {Incluye índice. }
}