@book{90804,
	author = {Robinson, Charles Sherwood,},
	title = {Geology of Devils Tower National Monument, Wyoming :},
	publisher = {Project Gutenberg,},
	year = {2015},
	address = {Salt Lake City, UT :},
	note = {Release date is 2015-09-14},
	url = {https://www.gutenberg.org/ebooks/49966}
}