APA (7th ed.) Citation

Helley, E. J. (1979). Flatland deposits of the San Francisco Bay region, California: Their geology and engineering properties, and their importance to comprehensive planning. United States Department of the Interior, Geological Survey.

Chicago Style (17th ed.) Citation

Helley, Edward J. Flatland Deposits of the San Francisco Bay Region, California: Their Geology and Engineering Properties, and Their Importance to Comprehensive Planning. Washington: United States Department of the Interior, Geological Survey, 1979.

MLA (9th ed.) Citation

Helley, Edward J. Flatland Deposits of the San Francisco Bay Region, California: Their Geology and Engineering Properties, and Their Importance to Comprehensive Planning. United States Department of the Interior, Geological Survey, 1979.