@book{81667,
	author = {Le Queux, William,},
	title = {The Closed Book: Concerning the Secret of the Borgias},
	publisher = {Project Gutenberg,},
	year = {2012},
	address = {Salt Lake City, UT :},
	note = {Release date is 2012-09-22},
	url = {https://www.gutenberg.org/ebooks/40828}
}