United States. Congress. Senate. Committee on Energy and Natural Resources, ProQuest (Firm), & United States. Congressional Budget Office. (1990). Sunset Crater Volcano National Monument. [publisher not identified].
Chicago Style (17th ed.) CitationUnited States. Congress. Senate. Committee on Energy and Natural Resources, ProQuest (Firm), and United States. Congressional Budget Office. Sunset Crater Volcano National Monument. Washington: [publisher not identified], 1990.
MLA (9th ed.) CitationUnited States. Congress. Senate. Committee on Energy and Natural Resources, et al. Sunset Crater Volcano National Monument. [publisher not identified], 1990.
Warning: These citations may not always be 100% accurate.