Carswell, W. J. (2016). The 3D Elevation Program: Summary for Puerto Rico. U.S. Department of the Interior, U.S. Geological Survey.
Chicago Style (17th ed.) CitationCarswell, William J. The 3D Elevation Program: Summary for Puerto Rico. [Reston, Va.]: U.S. Department of the Interior, U.S. Geological Survey, 2016.
MLA (9th ed.) CitationCarswell, William J. The 3D Elevation Program: Summary for Puerto Rico. U.S. Department of the Interior, U.S. Geological Survey, 2016.
Warning: These citations may not always be 100% accurate.