APA (7th ed.) Citation

(1961). Preliminary geologic map showing iron and copper prospects in the Juncos quadrangle, Puerto Rico. U.S. Geological Survey.

Chicago Style (17th ed.) Citation

Preliminary Geologic Map Showing Iron and Copper Prospects in the Juncos Quadrangle, Puerto Rico. Washington, D.C: U.S. Geological Survey, 1961.

MLA (9th ed.) Citation

Preliminary Geologic Map Showing Iron and Copper Prospects in the Juncos Quadrangle, Puerto Rico. U.S. Geological Survey, 1961.

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