APA (7th ed.) Citation

Smith, G. O., & Calkins, F. C. (1904). A geological reconnaissance across the Cascade range near the forty-ninth parallel. Department of the Interior, United States Geological Survey.

Chicago Style (17th ed.) Citation

Smith, George Otis, and Frank C. Calkins. A Geological Reconnaissance Across the Cascade Range Near the Forty-ninth Parallel. Washington, D.C.: Department of the Interior, United States Geological Survey, 1904.

MLA (9th ed.) Citation

Smith, George Otis, and Frank C. Calkins. A Geological Reconnaissance Across the Cascade Range Near the Forty-ninth Parallel. Department of the Interior, United States Geological Survey, 1904.