APA (7th ed.) Citation

Ellis, S. R. (1976). History of dredging and filling of lagoons in the San Juan area, Puerto Rico. United States Department of the Interior, Geological Survey.

Chicago Style (17th ed.) Citation

Ellis, S. R. History of Dredging and Filling of Lagoons in the San Juan Area, Puerto Rico. Ft. Buchanan, Puerto Rico: United States Department of the Interior, Geological Survey, 1976.

MLA (9th ed.) Citation

Ellis, S. R. History of Dredging and Filling of Lagoons in the San Juan Area, Puerto Rico. United States Department of the Interior, Geological Survey, 1976.