APA (7th ed.) Citation

Carswell, W. J. (2014). The 3D Elevation Program: Summary for Maryland. U.S. Department of the Interior, U.S. Geological Survey.

Chicago Style (17th ed.) Citation

Carswell, William J. The 3D Elevation Program: Summary for Maryland. Reston, VA: U.S. Department of the Interior, U.S. Geological Survey, 2014.

MLA (9th ed.) Citation

Carswell, William J. The 3D Elevation Program: Summary for Maryland. U.S. Department of the Interior, U.S. Geological Survey, 2014.