@book{60860,
	author = {Piper, H. Beam,},
	title = {Four-Day Planet},
	publisher = {Project Gutenberg,},
	year = {2006},
	address = {Salt Lake City, UT :},
	note = {Release date is 2006-10-06},
	url = {https://www.gutenberg.org/ebooks/19478}
}