APA (7th ed.) Citation

(1984). Geologic map of the San German quadrangle, Southwest Puerto Rico. U.S. Geological Survey.

Chicago Style (17th ed.) Citation

Geologic Map of the San German Quadrangle, Southwest Puerto Rico. Washington, D.C: U.S. Geological Survey, 1984.

MLA (9th ed.) Citation

Geologic Map of the San German Quadrangle, Southwest Puerto Rico. U.S. Geological Survey, 1984.

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