APA (7th ed.) Citation

Staatz, M. H., & Bauer, H. L. (1951). Virgin Valley opal district, Humboldt County, Nevada. United States Department of the Interior, Geological Survey.

Chicago Style (17th ed.) Citation

Staatz, Mortimer H., and Herman L. Bauer. Virgin Valley Opal District, Humboldt County, Nevada. Washington, D.C.: United States Department of the Interior, Geological Survey, 1951.

MLA (9th ed.) Citation

Staatz, Mortimer H., and Herman L. Bauer. Virgin Valley Opal District, Humboldt County, Nevada. United States Department of the Interior, Geological Survey, 1951.