Morelock, J. (2005). Morphologyდაარქივებული 2007-01-06 საიტზე Wayback Machine. . Geological Oceanography Program, University of Puerto Rico at Mayagüez (UPRM). Retrieved on: October 11, 2008.
web.archive.org
Morelock, J. (2005). Morphologyდაარქივებული 2007-01-06 საიტზე Wayback Machine. . Geological Oceanography Program, University of Puerto Rico at Mayagüez (UPRM). Retrieved on: October 11, 2008.