APA

United States, . (1999). EPA's expansion of 112(r) of the 1990 Clean Air Act Amendments to include propane: hearing before the Committee on Small Business, House of Representatives, One Hundred Sixth Congress, first session, Washington, DC, July 29, 1999. Washington: U.S. Government Printing Office.

Chicago

United States, . 1999. EPA's expansion of 112(r) of the 1990 Clean Air Act Amendments to include propane: hearing before the Committee on Small Business, House of Representatives, One Hundred Sixth Congress, first session, Washington, DC, July 29, 1999. Washington: U.S. Government Printing Office.

Harvard

United States, . (1999). EPA's expansion of 112(r) of the 1990 Clean Air Act Amendments to include propane: hearing before the Committee on Small Business, House of Representatives, One Hundred Sixth Congress, first session, Washington, DC, July 29, 1999. Washington: U.S. Government Printing Office.

MLA

United States, . EPA's expansion of 112(r) of the 1990 Clean Air Act Amendments to include propane: hearing before the Committee on Small Business, House of Representatives, One Hundred Sixth Congress, first session, Washington, DC, July 29, 1999. Washington: U.S. Government Printing Office. 1999.