Adolphson, D. G., Robison, T. M., & Seijo, M. A. (1977). Water resources of the Maunabo Valley, Puerto Rico. U.S. Department of the Interior, U.S. Geological Survey.
Chicago Style (17th ed.) CitationAdolphson, D. G., Tully M. Robison, and M. A. Seijo. Water Resources of the Maunabo Valley, Puerto Rico. Ft. Buchanan, Puerto Rico: U.S. Department of the Interior, U.S. Geological Survey, 1977.
MLA (9th ed.) CitationAdolphson, D. G., et al. Water Resources of the Maunabo Valley, Puerto Rico. U.S. Department of the Interior, U.S. Geological Survey, 1977.
Warning: These citations may not always be 100% accurate.