APA

United States, . (2001). Successful state environmental programs: hearing before the Committee on Environment and Public Works, United States Senate, One Hundred Sixth Congress, second session on oversight of programs delegated by the EPA to state departments of environmental protection, May 2,2000. Washington: U.S. Government Printing Office.

Chicago

United States, . 2001. Successful state environmental programs: hearing before the Committee on Environment and Public Works, United States Senate, One Hundred Sixth Congress, second session on oversight of programs delegated by the EPA to state departments of environmental protection, May 2,2000. Washington: U.S. Government Printing Office.

Harvard

United States, . (2001). Successful state environmental programs: hearing before the Committee on Environment and Public Works, United States Senate, One Hundred Sixth Congress, second session on oversight of programs delegated by the EPA to state departments of environmental protection, May 2,2000. Washington: U.S. Government Printing Office.

MLA

United States, . Successful state environmental programs: hearing before the Committee on Environment and Public Works, United States Senate, One Hundred Sixth Congress, second session on oversight of programs delegated by the EPA to state departments of environmental protection, May 2,2000. Washington: U.S. Government Printing Office. 2001.