United States. Congress. Senate. Committee on Interior and Insular Affairs. Subcommittee on Parks and Recreation. (1967). The North Cascades: Hearings, Ninetieth Congress, first session. U.S. Govt. Print. Off..
Style de citation Chicago (17e éd.)United States. Congress. Senate. Committee on Interior and Insular Affairs. Subcommittee on Parks and Recreation. The North Cascades: Hearings, Ninetieth Congress, First Session. Washington: U.S. Govt. Print. Off., 1967.
Style de citation MLA (8e éd.)United States. Congress. Senate. Committee on Interior and Insular Affairs. Subcommittee on Parks and Recreation. The North Cascades: Hearings, Ninetieth Congress, First Session. U.S. Govt. Print. Off., 1967.
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