@book{64050,
	author = {Coleman, Jules L.},
	title = {The practice of principle  in defence of a pragmatist approach to legal theory},
	publisher = {Oxford University Press},
	year = {2001},
	series = {Clarendon law lectures},
	address = {Oxford (Oxfordshire, Inglaterra)},
	url = {http://www.loc.gov/catdir/enhancements/fy0610/00068685-t.html}
}