@book{83757,
	author = {Upton, George P.},
	title = {The Standard Light Operas, Their Plots and Their Music},
	publisher = {Project Gutenberg,},
	year = {2013},
	address = {Salt Lake City, UT :},
	note = {Release date is 2013-06-11},
	url = {https://www.gutenberg.org/ebooks/42918}
}