@book{73638,
	author = {Baker, Gordon P. and Hacker, P. M. S.},
	title = {Wittgenstein  understanding and meaning},
	publisher = {Blackwell Pub.},
	year = {2005},
	series = {Analitical comentary on the philosophical investigations},
	address = {Oxford (Oxfordshire, Inglaterra)},
	edition = {2nd ed.},
	url = {http://www.loc.gov/catdir/toc/ecip0417/2004007861.html}
}