APA

United States, United States, . (1998). Clean Air Act: proposed regional haze regulations : hearing before the Subcommittee on Clean Air, Wetlands, Private Property, and Nuclear Safety and the Committee on Environment and Public Works, United States Senate, One Hundred Fifth Congress, second session, April 23, 1998. Washington: U.S. Government Printing Office.

Chicago

United States, United States, . 1998. Clean Air Act: proposed regional haze regulations : hearing before the Subcommittee on Clean Air, Wetlands, Private Property, and Nuclear Safety and the Committee on Environment and Public Works, United States Senate, One Hundred Fifth Congress, second session, April 23, 1998. Washington: U.S. Government Printing Office.

Harvard

United States, United States, . (1998). Clean Air Act: proposed regional haze regulations : hearing before the Subcommittee on Clean Air, Wetlands, Private Property, and Nuclear Safety and the Committee on Environment and Public Works, United States Senate, One Hundred Fifth Congress, second session, April 23, 1998. Washington: U.S. Government Printing Office.

MLA

United States, United States, . Clean Air Act: proposed regional haze regulations : hearing before the Subcommittee on Clean Air, Wetlands, Private Property, and Nuclear Safety and the Committee on Environment and Public Works, United States Senate, One Hundred Fifth Congress, second session, April 23, 1998. Washington: U.S. Government Printing Office. 1998.