APA (7th ed.) Citation

Geological Survey (U.S.), Brabb, E. E., & Olson, J. A. (1986). Map showing faults and earthquake epicenters in San Mateo County, California. The Survey.

Chicago Style (17th ed.) Citation

Geological Survey (U.S.), Earl E. Brabb, and Jean A. Olson. Map Showing Faults and Earthquake Epicenters in San Mateo County, California. Reston, Va.: The Survey, 1986.

MLA (9th ed.) Citation

Geological Survey (U.S.), et al. Map Showing Faults and Earthquake Epicenters in San Mateo County, California. The Survey, 1986.