APA (7th ed.) Citation

Powell, R. E. (1983). Mineral resource potential map of the Sugarloaf roadless area, San Bernardino County, California. U.S. Geological Survey.

Chicago Style (17th ed.) Citation

Powell, Robert E. Mineral Resource Potential Map of the Sugarloaf Roadless Area, San Bernardino County, California. Reston, Va.: U.S. Geological Survey, 1983.

MLA (9th ed.) Citation

Powell, Robert E. Mineral Resource Potential Map of the Sugarloaf Roadless Area, San Bernardino County, California. U.S. Geological Survey, 1983.