APA (7th ed.) Citation

Monroe, W. H. (1980). Some tropical landforms of Puerto Rico. United States Department of the Interior, Geological Survey.

Chicago Style (17th ed.) Citation

Monroe, Watson Hiner. Some Tropical Landforms of Puerto Rico. Washington: United States Department of the Interior, Geological Survey, 1980.

MLA (9th ed.) Citation

Monroe, Watson Hiner. Some Tropical Landforms of Puerto Rico. United States Department of the Interior, Geological Survey, 1980.

Warning: These citations may not always be 100% accurate.