APA (7th ed.) Citation

United States. Congress. Senate. Committee on Energy and Natural Resources. Subcommittee on Mineral Resources Development and Production & ProQuest (Firm). (1990). Hard rock mining: Hearing before the Subcommittee on Mineral Resources Development and Production of the Committee on Energy and Natural Resources, United States Senate, One Hundred First Congress, second session ... April 19, 1990. U.S. G.P.O..

Chicago Style (17th ed.) Citation

United States. Congress. Senate. Committee on Energy and Natural Resources. Subcommittee on Mineral Resources Development and Production and ProQuest (Firm). Hard Rock Mining: Hearing Before the Subcommittee on Mineral Resources Development and Production of the Committee on Energy and Natural Resources, United States Senate, One Hundred First Congress, Second Session ... April 19, 1990. Washington: U.S. G.P.O., 1990.

MLA (9th ed.) Citation

United States. Congress. Senate. Committee on Energy and Natural Resources. Subcommittee on Mineral Resources Development and Production and ProQuest (Firm). Hard Rock Mining: Hearing Before the Subcommittee on Mineral Resources Development and Production of the Committee on Energy and Natural Resources, United States Senate, One Hundred First Congress, Second Session ... April 19, 1990. U.S. G.P.O., 1990.