APA (7th ed.) Citation

Foster, H. L. (1972). Preliminary geologic map of the Eagle quadrangle, Alaska. U.S. Geological Survey.

Chicago Style (17th ed.) Citation

Foster, Helen Laura. Preliminary Geologic Map of the Eagle Quadrangle, Alaska. Washington, D.C.: U.S. Geological Survey, 1972.

MLA (9th ed.) Citation

Foster, Helen Laura. Preliminary Geologic Map of the Eagle Quadrangle, Alaska. U.S. Geological Survey, 1972.

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