Using open-source information effectively [electronic resource]: hearing before the Subcommittee on Intelligence, Information Sharing, and Terrorism Risk Assessment of the Committee on Homeland Security, House of Representatives, One Hundred Ninth Congress, first session, June 21, 2005.
Washington : U.S. G.P.O. : For sale by the Supt. of Docs., U.S. G.P.O., 2007.