@book{3217,
	author = {Rosen, Kenneth H. and Rosinki, Richard R.},
	title = {Unix sistema V versión 4 / },
	publisher = {Osborne McGraw Hill, },
	year = {1997.},
	address = {Madrid, Sabta Fé de Bogotá : },
	edition = {2a. ed.},
	note = {Incluye índice.}
}