APA (7th ed.) Citation

Olcott, P. G., & Siegel, D. I. (1978). Physiography and superficial geology of the copper-nickel study region, northeastern Minnesota. U.S. Geological Survey.

Chicago Style (17th ed.) Citation

Olcott, Perry G., and Donald I. Siegel. Physiography and Superficial Geology of the Copper-nickel Study Region, Northeastern Minnesota. St. Paul, Minnesota: U.S. Geological Survey, 1978.

MLA (9th ed.) Citation

Olcott, Perry G., and Donald I. Siegel. Physiography and Superficial Geology of the Copper-nickel Study Region, Northeastern Minnesota. U.S. Geological Survey, 1978.