United States. Congress. House. Committee on Education and Labor. (2009). Examining workers' rights and violence against labor union leaders in Colombia: Hearing before the Committee on Education and Labor, U.S. House of Representatives, One Hundred Eleventh Congress, first session, hearing held in Washington, DC, February 12, 2009. U.S. G.P.O..
Chicago Style (17th ed.) CitationUnited States. Congress. House. Committee on Education and Labor. Examining Workers' Rights and Violence Against Labor Union Leaders in Colombia: Hearing Before the Committee on Education and Labor, U.S. House of Representatives, One Hundred Eleventh Congress, First Session, Hearing Held in Washington, DC, February 12, 2009. Washington: U.S. G.P.O., 2009.
MLA (9th ed.) CitationUnited States. Congress. House. Committee on Education and Labor. Examining Workers' Rights and Violence Against Labor Union Leaders in Colombia: Hearing Before the Committee on Education and Labor, U.S. House of Representatives, One Hundred Eleventh Congress, First Session, Hearing Held in Washington, DC, February 12, 2009. U.S. G.P.O., 2009.