Unauthorized charges on telephone bills [electronic resource] : why crammers win and consumers lose : hearing before the Committee on Commerce, Science, and Transportation, United States Senate, One Hundred Twelfth Congress, first session, July 13, 2011.
Imprint
Washington : U.S. G.P.O. : For sale by the Supt. of Docs., U.S. G.P.O., 2011.