@book{103316,
	author = {Powell, Lyman P.},
	title = {The art of natural sleep},
	publisher = {Project Gutenberg,},
	year = {2020},
	address = {Salt Lake City, UT :},
	note = {Release date is 2020-06-29},
	url = {https://www.gutenberg.org/ebooks/62492}
}