@book{254321,
	author = {United States.},
	title = {Lessons learned from security at past Olympic games :},
	publisher = {U.S. Government Publishing Office,},
	year = {2016.},
	series = {S. hrg. ;},
	address = {Washington :},
	note = {Title from title screen (viewed on Aug. 3, 2016).},
	url = {http://purl.fdlp.gov/GPO/gpo70818}
}