@book{272711,
	author = {United States.},
	title = {Yellowstone National Park boating regulations :},
	publisher = {National Park Service,},
	year = {2018.},
	address = {[Washington, D.C.] :},
	note = {"Ver. 0318"--Page [4] of cover.},
	url = {https://purl.fdlp.gov/GPO/gpo93939}
}