APA (7th ed.) Citation

United States. Government Accountability Office & ProQuest (Firm). (2009). Transportation security: Key actions have been taken to enhance mass transit and passenger rail security, but opportunities exist to strengthen federal strategy and programs : report to the Chairman, Committee on Homeland Security, House of Representatives. U.S. Govt. Accountability Office.

Chicago Style (17th ed.) Citation

United States. Government Accountability Office and ProQuest (Firm). Transportation Security: Key Actions Have Been Taken to Enhance Mass Transit and Passenger Rail Security, but Opportunities Exist to Strengthen Federal Strategy and Programs : Report to the Chairman, Committee on Homeland Security, House of Representatives. [Washington, D.C.]: U.S. Govt. Accountability Office, 2009.

MLA (9th ed.) Citation

United States. Government Accountability Office and ProQuest (Firm). Transportation Security: Key Actions Have Been Taken to Enhance Mass Transit and Passenger Rail Security, but Opportunities Exist to Strengthen Federal Strategy and Programs : Report to the Chairman, Committee on Homeland Security, House of Representatives. U.S. Govt. Accountability Office, 2009.