"Coral Reef Habitat Assessment for U.S. Marine Protected Areas: U.S. Territory of Guam", National Oceanic and Atmospheric Administration, NOAA’s National Ocean Service, Management &amp; Budget Office, Special Projects, February 2009
National Oceanic and Atmospheric Administration
<a rel="nofollow" class="external free" href="https://www.coris.noaa.gov/activities/habitat_assessment/guam.pdf">https://www.coris.noaa.gov/activities/habitat_assessment/guam.pdf</a>