APA (7th ed.) Citation

Twenhofel, W. S. (1951). Geology of proposed Blue Lake dam site and tunnel near Sitka, Alaska. United States Department of the Interior, Geological Survey.

Chicago Style (17th ed.) Citation

Twenhofel, W. S. Geology of Proposed Blue Lake Dam Site and Tunnel Near Sitka, Alaska. Washington, D.C.: United States Department of the Interior, Geological Survey, 1951.

MLA (9th ed.) Citation

Twenhofel, W. S. Geology of Proposed Blue Lake Dam Site and Tunnel Near Sitka, Alaska. United States Department of the Interior, Geological Survey, 1951.