United States. Congress. Senate. Committee on Energy and Natural Resources. (2009). Cyber security: Hearing before the Committee on Energy and Natural Resources, United States Senate, One Hundred Eleventh Congress, first session ... May 7, 2009. U.S. G.P.O..
Chicago Style (17th ed.) CitationUnited States. Congress. Senate. Committee on Energy and Natural Resources. Cyber Security: Hearing Before the Committee on Energy and Natural Resources, United States Senate, One Hundred Eleventh Congress, First Session ... May 7, 2009. Washington: U.S. G.P.O., 2009.
MLA (9th ed.) CitationUnited States. Congress. Senate. Committee on Energy and Natural Resources. Cyber Security: Hearing Before the Committee on Energy and Natural Resources, United States Senate, One Hundred Eleventh Congress, First Session ... May 7, 2009. U.S. G.P.O., 2009.