@book{57730,
	author = {Lehmann, Friedrich J.},
	title = {A Treatise on Simple Counterpoint in Forty Lessons},
	publisher = {Project Gutenberg,},
	year = {2005},
	address = {Salt Lake City, UT :},
	note = {Release date is 2005-07-21},
	url = {https://www.gutenberg.org/ebooks/16342}
}