APA (7th ed.) Citation

Duell, L. F. W. (1990). Water resources of the Descanso Area, San Diego County, California. U.S. Geological Survey.

Chicago Style (17th ed.) Citation

Duell, Lowell F. W. Water Resources of the Descanso Area, San Diego County, California. Sacramento, California: U.S. Geological Survey, 1990.

MLA (9th ed.) Citation

Duell, Lowell F. W. Water Resources of the Descanso Area, San Diego County, California. U.S. Geological Survey, 1990.