@book{53581,
	author = {Williams, William Klapp,},
	title = {The Communes of Lombardy from the VI. to the X. Century :},
	publisher = {Project Gutenberg,},
	year = {2004},
	address = {Salt Lake City, UT :},
	note = {Communes of Lombardy from the Sixth to the Tenth Century},
	url = {https://www.gutenberg.org/ebooks/12162}
}