Walker, D. M. (2007). United States Government Accountability Office: Supporting the Congress through oversight, insight, and foresight : testimony before the Committee on Homeland Security and Governmental Affairs, U.S. Senate ([Rev. ed.].). U.S. Govt. Accountability Office.
Chicago Style (17th ed.) CitationWalker, David M. United States Government Accountability Office: Supporting the Congress Through Oversight, Insight, and Foresight : Testimony Before the Committee on Homeland Security and Governmental Affairs, U.S. Senate. [Rev. ed.]. [Washington, D.C.]: U.S. Govt. Accountability Office, 2007.
MLA (9th ed.) CitationWalker, David M. United States Government Accountability Office: Supporting the Congress Through Oversight, Insight, and Foresight : Testimony Before the Committee on Homeland Security and Governmental Affairs, U.S. Senate. [Rev. ed.]. U.S. Govt. Accountability Office, 2007.