United States. Congress. House. Committee on Education and Labor. (2010). The Upper Big Branch mine tragedy: Field hearing before the Committee on Education and Labor, U.S. House of Representatives, One Hundred Eleventh Congress, second session, hearing held in Beckley, WV, May 24, 2010. U.S. G.P.O..
Chicago Style (17th ed.) CitationUnited States. Congress. House. Committee on Education and Labor. The Upper Big Branch Mine Tragedy: Field Hearing Before the Committee on Education and Labor, U.S. House of Representatives, One Hundred Eleventh Congress, Second Session, Hearing Held in Beckley, WV, May 24, 2010. Washington: U.S. G.P.O., 2010.
MLA (9th ed.) CitationUnited States. Congress. House. Committee on Education and Labor. The Upper Big Branch Mine Tragedy: Field Hearing Before the Committee on Education and Labor, U.S. House of Representatives, One Hundred Eleventh Congress, Second Session, Hearing Held in Beckley, WV, May 24, 2010. U.S. G.P.O., 2010.