Programs, United States Congress House Committee on Small Business Subcommittee on Workforce, Empowerment, and Government. How the Clean Air Act Affects Auto Repair: Hearing Before the Subcommittee on Workforce, Empowerment & Government Programs of the Committee on Small Business, House of Representatives, One Hundred Ninth Congress, First Session, Washington, DC, June 28, 2005. 清洁空气法案如何影响汽车维修》。华盛顿:美国政府印刷局。. U.S. Government Printing Office. 2005 [2025-04-09]. ISBN 978-0-16-075407-4(英语).