@book{92651,
	author = {United States. National Park Service. Division of Publications},
	title = {Big Bend National Park, Texas},
	publisher = {Project Gutenberg,},
	year = {2016},
	address = {Salt Lake City, UT :},
	note = {Release date is 2016-04-20},
	url = {https://www.gutenberg.org/ebooks/51817}
}