APA

United States, . (2006). Detection of lead in the DC drinking water system: hearing before the Subcommittee on Fisheries, Wildlife, and Water of the Committee on Environment and Public Works, United States Senate, One Hundred Eighth Congress, second session, April 7, 2004. Washington: U.S. Government Printing Office.

Chicago

United States, . 2006. Detection of lead in the DC drinking water system: hearing before the Subcommittee on Fisheries, Wildlife, and Water of the Committee on Environment and Public Works, United States Senate, One Hundred Eighth Congress, second session, April 7, 2004. Washington: U.S. Government Printing Office.

Harvard

United States, . (2006). Detection of lead in the DC drinking water system: hearing before the Subcommittee on Fisheries, Wildlife, and Water of the Committee on Environment and Public Works, United States Senate, One Hundred Eighth Congress, second session, April 7, 2004. Washington: U.S. Government Printing Office.

MLA

United States, . Detection of lead in the DC drinking water system: hearing before the Subcommittee on Fisheries, Wildlife, and Water of the Committee on Environment and Public Works, United States Senate, One Hundred Eighth Congress, second session, April 7, 2004. Washington: U.S. Government Printing Office. 2006.