Johnson, D. R. (1981). American law enforcement: A history. Forum Press.
Chicago Style (17th ed.) CitationJohnson, David R. American Law Enforcement: A History. Saint Louis, Miss: Forum Press, 1981.
MLA (8th ed.) CitationJohnson, David R. American Law Enforcement: A History. Forum Press, 1981.
Warning: These citations may not always be 100% accurate.