Hearing on the case of Mark Gregory : hearing before the Subcommittee on Civil Service of the Committee on Post Office and Civil Service, House of Representatives, One Hundredth Congress, second session, May 17, 1988
Washington : U.S. Government Printing Office, 1989. Washington, DC : For sale by the Superintendent of Documents, Congressional Sales Office, U.S. Government Printing Office [Getzville, New York] : William S. Hein & Company, [2014]