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. G.P.O.

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. G.P.O.

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. G.P.O.

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. G.P.O. 2001.