United States. Congress. Senate. Committee on Foreign Relations. (2009). U.S.-Mexican border violence: Hearing before the Committee on Foreign Relations, United States Senate, One Hundred Eleventh Congress, first session, March 30, 2009. U.S. G.P.O..
Chicago Style (17th ed.) CitationUnited States. Congress. Senate. Committee on Foreign Relations. U.S.-Mexican Border Violence: Hearing Before the Committee on Foreign Relations, United States Senate, One Hundred Eleventh Congress, First Session, March 30, 2009. Washington: U.S. G.P.O., 2009.
MLA (9th ed.) CitationUnited States. Congress. Senate. Committee on Foreign Relations. U.S.-Mexican Border Violence: Hearing Before the Committee on Foreign Relations, United States Senate, One Hundred Eleventh Congress, First Session, March 30, 2009. U.S. G.P.O., 2009.