United States. Congress. Senate. Committee on Energy and Natural Resources & ProQuest (Firm). (1999). Natural gas: Hearing before the Committee on Energy and Natural Resources, United States Senate, One Hundred Sixth Congress, first session ... April 2, 1999. U.S. G.P.O..
Chicago Style (17th ed.) CitationUnited States. Congress. Senate. Committee on Energy and Natural Resources and ProQuest (Firm). Natural Gas: Hearing Before the Committee on Energy and Natural Resources, United States Senate, One Hundred Sixth Congress, First Session ... April 2, 1999. Washington: U.S. G.P.O., 1999.
MLA (9th ed.) CitationUnited States. Congress. Senate. Committee on Energy and Natural Resources and ProQuest (Firm). Natural Gas: Hearing Before the Committee on Energy and Natural Resources, United States Senate, One Hundred Sixth Congress, First Session ... April 2, 1999. U.S. G.P.O., 1999.