United States. Congress. Senate. Committee on Energy and Natural Resources. (2006). Wyoming coal industry: Hearing before the Committee on Energy and Natural Resources, United States Senate, One Hundred Ninth Congress, second session, on issues associated with the growth and development of the Wyoming coal industry, Casper, WY, April 12, 2006. U.S. G.P.O..
Chicago Style (17th ed.) CitationUnited States. Congress. Senate. Committee on Energy and Natural Resources. Wyoming Coal Industry: Hearing Before the Committee on Energy and Natural Resources, United States Senate, One Hundred Ninth Congress, Second Session, on Issues Associated with the Growth and Development of the Wyoming Coal Industry, Casper, WY, April 12, 2006. Washington: U.S. G.P.O., 2006.
MLA (9th ed.) CitationUnited States. Congress. Senate. Committee on Energy and Natural Resources. Wyoming Coal Industry: Hearing Before the Committee on Energy and Natural Resources, United States Senate, One Hundred Ninth Congress, Second Session, on Issues Associated with the Growth and Development of the Wyoming Coal Industry, Casper, WY, April 12, 2006. U.S. G.P.O., 2006.