APA

United States, . (1998). Environmental audits: hearing before the Committee on Environment and Public Works, United States Senate, One Hundred Fifth Congress, first session, on the review of activities by the federal government concerning individuals or organizations voluntarily submitting to environmental audits, October 30, 1997. Washington: U.S. G.P.O.

Chicago

United States, . 1998. Environmental audits: hearing before the Committee on Environment and Public Works, United States Senate, One Hundred Fifth Congress, first session, on the review of activities by the federal government concerning individuals or organizations voluntarily submitting to environmental audits, October 30, 1997. Washington: U.S. G.P.O.

Harvard

United States, . (1998). Environmental audits: hearing before the Committee on Environment and Public Works, United States Senate, One Hundred Fifth Congress, first session, on the review of activities by the federal government concerning individuals or organizations voluntarily submitting to environmental audits, October 30, 1997. Washington: U.S. G.P.O.

MLA

United States, . Environmental audits: hearing before the Committee on Environment and Public Works, United States Senate, One Hundred Fifth Congress, first session, on the review of activities by the federal government concerning individuals or organizations voluntarily submitting to environmental audits, October 30, 1997. Washington: U.S. G.P.O. 1998.