@book{90770,
	author = {Krehbiel, Henry Edward,},
	title = {The Mentor: Makers of Modern Opera, Vol. 1, Num. 47, Serial No. 47},
	publisher = {Project Gutenberg,},
	year = {2015},
	address = {Salt Lake City, UT :},
	note = {Release date is 2015-09-10},
	url = {https://www.gutenberg.org/ebooks/49932}
}