@book{66700,
	author = {Campbell, Angus and United States},
	title = {Supplemental studies for the National Advisory Commission on Civil Disorders.},
	publisher = {For sale by the Supt. of Docs., U.S. Govt. Print. Off.},
	year = {[1968]},
	address = {Washington},
	note = {"The studies were conducted independently of the Commission and of each other by research groups at the University of Michigan, the Johns Hopkins University, and Columbia University."}
}