@book{101400,
	author = {Keefer, William R., and Stacy, John R.},
	title = {The Geologic Story of Yellowstone National Park},
	publisher = {Project Gutenberg,},
	year = {2019},
	series = {Geological Survey Bulletin 1347},
	address = {Salt Lake City, UT :},
	note = {Release date is 2019-10-25},
	url = {https://www.gutenberg.org/ebooks/60574}
}