@book{289875,
	author = {Ludwig, Jens, and United States.},
	title = {Underground gun markets in Chicago  /},
	publisher = {National Criminal Justice Reference Service, Office of Justice Programs,},
	year = {2019.},
	address = {[Washington, D.C.] :},
	note = {"Document Number: 253014" -- Grant transmittal document.},
	url = {http://purl.fdlp.gov/GPO/gpo128080}
}