APA (7th ed.) Citation

Geological Survey (U.S.) & Denny, C. S. (1979). The Parsonsburg Sand in the central Delmarva Peninsula, Maryland and Delaware. Dept. of the Interior, Geological Survey.

Chicago Style (17th ed.) Citation

Geological Survey (U.S.) and Charles Storrow Denny. The Parsonsburg Sand in the Central Delmarva Peninsula, Maryland and Delaware. [Reston, Va.]: Dept. of the Interior, Geological Survey, 1979.

MLA (9th ed.) Citation

Geological Survey (U.S.) and Charles Storrow Denny. The Parsonsburg Sand in the Central Delmarva Peninsula, Maryland and Delaware. Dept. of the Interior, Geological Survey, 1979.