Hewitt, Christopher. Understanding terrorism in America : from Klan to al Qaeda / Christopher Hewitt. - New York ; London. : Routledge, 2003. - xvii, 154 p. ; 22 cm. - Routledge studies in extremism and democracy . Includes bibliography (p. [138]-147) and index. ISBN: 0415277663 : Subjects--Topical Terms: Terrorism--United States. LC Class. No.: HV6432 / .H49