APA (7th ed.) Citation

Geological Survey (U.S.). (1935). Pre-Cambrian Rocks of the Lake Superior Region, a review of newly discovered geologic features with a revised geologic map. [s.n.].

Chicago Style (17th ed.) Citation

Geological Survey (U.S.). Pre-Cambrian Rocks of the Lake Superior Region, a Review of Newly Discovered Geologic Features with a Revised Geologic Map. [Washington]: [s.n.], 1935.

MLA (9th ed.) Citation

Geological Survey (U.S.). Pre-Cambrian Rocks of the Lake Superior Region, a Review of Newly Discovered Geologic Features with a Revised Geologic Map. [s.n.], 1935.