@book{27539,
	author = {Sobell, Mark G.},
	title = {A practical guide to Ubuntu Linux ./},
	publisher = {Prentice Hall },
	year = {c2009.},
	address = {Upper Saddle River, NJ  },
	edition = {2a ed.},
	note = {Folio de Cd Rom ( F: 1614)}
}