United States. Government Accountability Office. (2015). Critical infrastructure protection: Preliminary observations on DHS efforts to address electromagnetic threats to the electric grid : testimony before the Committee on Homeland Security and Governmental Affairs, U.S. Senate. United States Government Accountability Office.
Chicago Style (17th ed.) CitationUnited States. Government Accountability Office. Critical Infrastructure Protection: Preliminary Observations on DHS Efforts to Address Electromagnetic Threats to the Electric Grid : Testimony Before the Committee on Homeland Security and Governmental Affairs, U.S. Senate. [Washington, D.C.]: United States Government Accountability Office, 2015.
MLA (9th ed.) CitationUnited States. Government Accountability Office. Critical Infrastructure Protection: Preliminary Observations on DHS Efforts to Address Electromagnetic Threats to the Electric Grid : Testimony Before the Committee on Homeland Security and Governmental Affairs, U.S. Senate. United States Government Accountability Office, 2015.