APA

United States, . (19992000). The national environmental policy and the Environmental Quality Improvement Act: hearing before the Committee on Resources, House of Representatives, One Hundred Sixth Congress, first session, April 13, 1999, Washington, DC. Washington: U.S. Government Printing Office.

Chicago

United States, . 19992000. The national environmental policy and the Environmental Quality Improvement Act: hearing before the Committee on Resources, House of Representatives, One Hundred Sixth Congress, first session, April 13, 1999, Washington, DC. Washington: U.S. Government Printing Office.

Harvard

United States, . (19992000). The national environmental policy and the Environmental Quality Improvement Act: hearing before the Committee on Resources, House of Representatives, One Hundred Sixth Congress, first session, April 13, 1999, Washington, DC. Washington: U.S. Government Printing Office.

MLA

United States, . The national environmental policy and the Environmental Quality Improvement Act: hearing before the Committee on Resources, House of Representatives, One Hundred Sixth Congress, first session, April 13, 1999, Washington, DC. Washington: U.S. Government Printing Office. 19992000.