Anderson, H. R. (1977). Ground water in the Lajas Valley, Puerto Rico. U.S. Department of the Interior, Geological Survey.
Chicago Style (17th ed.) CitationAnderson, H. R. Ground Water in the Lajas Valley, Puerto Rico. Washington, D.C.: U.S. Department of the Interior, Geological Survey, 1977.
MLA (9th ed.) CitationAnderson, H. R. Ground Water in the Lajas Valley, Puerto Rico. U.S. Department of the Interior, Geological Survey, 1977.
Warning: These citations may not always be 100% accurate.