APA (7th ed.) Citation

Geological Survey (U.S.), Utah Geological and Mineral Survey, Brabb, E. E., Wieczorek, G. F., & Harp, E. L. (1989). Map showing 1983 landslides in Utah. U.S. Geological Survey.

Chicago Style (17th ed.) Citation

Geological Survey (U.S.), Utah Geological and Mineral Survey, Earl E. Brabb, Gerald F. Wieczorek, and Edwin L. Harp. Map Showing 1983 Landslides in Utah. Reston, Va.: U.S. Geological Survey, 1989.

MLA (9th ed.) Citation

Geological Survey (U.S.), et al. Map Showing 1983 Landslides in Utah. U.S. Geological Survey, 1989.