@book{3080,
	author = {Catapult Inc. and Guirado Clavijo, Rafael, },
	title = {Microsoft excel 5 para windows paso a paso / },
	publisher = {McGraw-Hill, },
	year = {1994.},
	address = {Madrid ; Santa Fe de Bogotá : },
	note = {Incluye contenido e índice.}
}