APA (7th ed.) Citation

Geological Survey (U.S.) & Ekren, E. B. (1977). Geologic map of Tertiary rocks, Lincoln County, Nevada. U.S. Geological Survey.

Chicago Style (17th ed.) Citation

Geological Survey (U.S.) and E. B. Ekren. Geologic Map of Tertiary Rocks, Lincoln County, Nevada. Reston, Va.: U.S. Geological Survey, 1977.

MLA (9th ed.) Citation

Geological Survey (U.S.) and E. B. Ekren. Geologic Map of Tertiary Rocks, Lincoln County, Nevada. U.S. Geological Survey, 1977.