@book{79143,
	author = {Various},
	title = {Encyclopaedia Britannica, 11th Edition, "Groups, Theory of" to "Gwyniad" :},
	publisher = {Project Gutenberg,},
	year = {2011},
	address = {Salt Lake City, UT :},
	note = {Release date is 2011-12-14},
	url = {https://www.gutenberg.org/ebooks/38304}
}