APA (7th ed.) Citation

Wahrhaftig, C. (1970). Geologic map of the Healy D-4 quadrangle, Alaska. U.S. Geological Survey.

Chicago Style (17th ed.) Citation

Wahrhaftig, Clyde. Geologic Map of the Healy D-4 Quadrangle, Alaska. Washington, D.C.: U.S. Geological Survey, 1970.

MLA (9th ed.) Citation

Wahrhaftig, Clyde. Geologic Map of the Healy D-4 Quadrangle, Alaska. U.S. Geological Survey, 1970.