United States. Congress. Senate. Committee on Homeland Security and Governmental Affairs. (2009). Confronting the terrorist threat to the homeland: Six years after 9/11 : hearing before the Committee on Homeland Security and Governmental Affairs, United States Senate, One Hundred Tenth Congress, first session, September 10, 2007. U.S. G.P.O..
Chicago Style (17th ed.) CitationUnited States. Congress. Senate. Committee on Homeland Security and Governmental Affairs. Confronting the Terrorist Threat to the Homeland: Six Years After 9/11 : Hearing Before the Committee on Homeland Security and Governmental Affairs, United States Senate, One Hundred Tenth Congress, First Session, September 10, 2007. Washington: U.S. G.P.O., 2009.
MLA (9th ed.) CitationUnited States. Congress. Senate. Committee on Homeland Security and Governmental Affairs. Confronting the Terrorist Threat to the Homeland: Six Years After 9/11 : Hearing Before the Committee on Homeland Security and Governmental Affairs, United States Senate, One Hundred Tenth Congress, First Session, September 10, 2007. U.S. G.P.O., 2009.