@book{2980,
	author = {Acerson, Karen L. and Ruíz Ayuso, Ramón, },
	title = {Wordperfect 5.0 : },
	publisher = {Osborne, McGraw-Hill, },
	year = {1991.},
	address = {Madrid, Bogotá : },
	note = {Incluye indice.}
}