APA (7th ed.) Citation

Geological Survey (U.S.), Mark, R. K., Newman, E. B., & Brabb, E. E. (1988). Slope map of San Mateo County, California. The Survey.

Chicago Style (17th ed.) Citation

Geological Survey (U.S.), Robert K. Mark, Evelyn B. Newman, and Earl E. Brabb. Slope Map of San Mateo County, California. Reston, Va.: The Survey, 1988.

MLA (9th ed.) Citation

Geological Survey (U.S.), et al. Slope Map of San Mateo County, California. The Survey, 1988.