@book{23948,
	author = {Glass, Dorothy F.},
	title = {Portals, pilgrimage, and crusade in western Tuscany /},
	publisher = {Princeton University Press,},
	year = {c1997.},
	address = {Princeton, N.J. :},
	url = {http://www.loc.gov/catdir/toc/prin031/96033486.html}
}