APA (7th ed.) Citation

Geological Survey (U.S.), Brabb, E. E., & Graham, S. (1997). Geologic map of Santa Cruz County, California: A digital database. U.S. Dept. of the Interior, U.S. Geological Survey.

Chicago Style (17th ed.) Citation

Geological Survey (U.S.), Earl E. Brabb, and S. Graham. Geologic Map of Santa Cruz County, California: A Digital Database. [Reston, Va.]: U.S. Dept. of the Interior, U.S. Geological Survey, 1997.

MLA (9th ed.) Citation

Geological Survey (U.S.), et al. Geologic Map of Santa Cruz County, California: A Digital Database. U.S. Dept. of the Interior, U.S. Geological Survey, 1997.