APA (7th ed.) Citation

Geological Survey (U.S.) & Helley, E. J. (1981). Geologic map of the Battle Creek Fault zone and adjacent parts of the northern Sacramento Valley, California. The Survey.

Chicago Style (17th ed.) Citation

Geological Survey (U.S.) and Edward J. Helley. Geologic Map of the Battle Creek Fault Zone and Adjacent Parts of the Northern Sacramento Valley, California. Reston, Va.: The Survey, 1981.

MLA (9th ed.) Citation

Geological Survey (U.S.) and Edward J. Helley. Geologic Map of the Battle Creek Fault Zone and Adjacent Parts of the Northern Sacramento Valley, California. The Survey, 1981.