@book{102361,
	author = {Oman, Charles,},
	title = {The Dark Ages, 476-918},
	publisher = {Project Gutenberg,},
	year = {2020},
	series = {Periods of European History: Period I., 476-918},
	address = {Salt Lake City, UT :},
	note = {Release date is 2020-02-29},
	url = {https://www.gutenberg.org/ebooks/61536}
}