Valentine, P. C. (2005). Sea floor image maps showing topography, sun-Illuminated topography, backscatter intensity, ruggedness, slope, and the distribution of boulder ridges and bedrock outcrops in the Stellwagen Bank National Marine Sanctuary region off Boston, Massachusetts (Version 1.0.). U.S. Geological Survey.
Chicago Style (17th ed.) CitationValentine, Page C. Sea Floor Image Maps Showing Topography, Sun-Illuminated Topography, Backscatter Intensity, Ruggedness, Slope, and the Distribution of Boulder Ridges and Bedrock Outcrops in the Stellwagen Bank National Marine Sanctuary Region off Boston, Massachusetts. Version 1.0. [Woods Hole, Mass.]: U.S. Geological Survey, 2005.
MLA (9th ed.) CitationValentine, Page C. Sea Floor Image Maps Showing Topography, Sun-Illuminated Topography, Backscatter Intensity, Ruggedness, Slope, and the Distribution of Boulder Ridges and Bedrock Outcrops in the Stellwagen Bank National Marine Sanctuary Region off Boston, Massachusetts. Version 1.0. U.S. Geological Survey, 2005.