United States. Congress. Senate. Committee on Commerce, Science, and Transportation. (2010). Transportation challenges and cybersecurity post-9/11: Hearing before the Committee on Commerce, Science, and Transportation, United States Senate, One Hundred Eleventh Congress, first session, December 2, 2009. U.S. G.P.O..
Chicago Style (17th ed.) CitationUnited States. Congress. Senate. Committee on Commerce, Science, and Transportation. Transportation Challenges and Cybersecurity Post-9/11: Hearing Before the Committee on Commerce, Science, and Transportation, United States Senate, One Hundred Eleventh Congress, First Session, December 2, 2009. Washington: U.S. G.P.O., 2010.
MLA (9th ed.) CitationUnited States. Congress. Senate. Committee on Commerce, Science, and Transportation. Transportation Challenges and Cybersecurity Post-9/11: Hearing Before the Committee on Commerce, Science, and Transportation, United States Senate, One Hundred Eleventh Congress, First Session, December 2, 2009. U.S. G.P.O., 2010.