APA (7th ed.) Citation

Sherrod, D. R. (1990). Mineral resources of the Kofa Unit 4 North Wilderness Study Area, Yuma County, Arizona. Department of the Interior, U.S. Geological Survey.

Chicago Style (17th ed.) Citation

Sherrod, David R. Mineral Resources of the Kofa Unit 4 North Wilderness Study Area, Yuma County, Arizona. [Reston, Va.]: Department of the Interior, U.S. Geological Survey, 1990.

MLA (9th ed.) Citation

Sherrod, David R. Mineral Resources of the Kofa Unit 4 North Wilderness Study Area, Yuma County, Arizona. Department of the Interior, U.S. Geological Survey, 1990.