APA

United States, . (1999). The status of the federal superfund program: hearing before the Subcommittee on Finance and Hazardous Materials of the Committee on Commerce, House of Representatives, One Hundred Sixth Congress, first session, March 23, 1999. Washington: U.S. Government Printing Office.

Chicago

United States, . 1999. The status of the federal superfund program: hearing before the Subcommittee on Finance and Hazardous Materials of the Committee on Commerce, House of Representatives, One Hundred Sixth Congress, first session, March 23, 1999. Washington: U.S. Government Printing Office.

Harvard

United States, . (1999). The status of the federal superfund program: hearing before the Subcommittee on Finance and Hazardous Materials of the Committee on Commerce, House of Representatives, One Hundred Sixth Congress, first session, March 23, 1999. Washington: U.S. Government Printing Office.

MLA

United States, . The status of the federal superfund program: hearing before the Subcommittee on Finance and Hazardous Materials of the Committee on Commerce, House of Representatives, One Hundred Sixth Congress, first session, March 23, 1999. Washington: U.S. Government Printing Office. 1999.