@book{68422,
	author = {Yard, Robert Sterling,},
	title = {The Book of the National Parks},
	publisher = {Project Gutenberg,},
	year = {2008},
	address = {Salt Lake City, UT :},
	note = {Release date is 2008-12-12},
	url = {https://www.gutenberg.org/ebooks/27513}
}