(2002). Geology and hydrogeology of the Caribbean islands aquifer system of the Commonwealth of Puerto Rico and the U.S. Virgin Islands. U.S. Geological Survey, Information Services.
Chicago-Zitierstil (17. Ausg.)Geology and Hydrogeology of the Caribbean Islands Aquifer System of the Commonwealth of Puerto Rico and the U.S. Virgin Islands. Denver, CO: U.S. Geological Survey, Information Services, 2002.
MLA-Zitierstil (9. Ausg.)Geology and Hydrogeology of the Caribbean Islands Aquifer System of the Commonwealth of Puerto Rico and the U.S. Virgin Islands. U.S. Geological Survey, Information Services, 2002.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.