APA (7th ed.) Citation

Richter, D. H. (1971). Reconnaissance geologic map and section of the Nabesna B-4 quadrangle, Alaska. U.S. Geological Survey.

Chicago Style (17th ed.) Citation

Richter, Donald H. Reconnaissance Geologic Map and Section of the Nabesna B-4 Quadrangle, Alaska. Washington, D.C.: U.S. Geological Survey, 1971.

MLA (9th ed.) Citation

Richter, Donald H. Reconnaissance Geologic Map and Section of the Nabesna B-4 Quadrangle, Alaska. U.S. Geological Survey, 1971.