@book{60723,
	author = {Piper, H. Beam,},
	title = {The Keeper},
	publisher = {Project Gutenberg,},
	year = {2006},
	series = {Produced from Venture Science Fiction, July 1957.},
	address = {Salt Lake City, UT :},
	note = {Wikipedia page about this book: https://en.wikipedia.org/wiki/The_Keeper_(short_story)},
	url = {https://www.gutenberg.org/ebooks/19338}
}