@book{61549,
	author = {Haweis, H. R.},
	title = {Parsifal: Story and Analysis of Wagner's Great Opera},
	publisher = {Project Gutenberg,},
	year = {2007},
	address = {Salt Lake City, UT :},
	note = {Release date is 2007-01-04},
	url = {https://www.gutenberg.org/ebooks/20264}
}