APA (7th ed.) Citation

Smith, G. O., & Willis, B. (1903). Contributions to the geology of Washington: Geology and physiography of central Washington. Department of the Interior, United States Geological Survey.

Chicago Style (17th ed.) Citation

Smith, George Otis, and Bailey Willis. Contributions to the Geology of Washington: Geology and Physiography of Central Washington. Washington: Department of the Interior, United States Geological Survey, 1903.

MLA (9th ed.) Citation

Smith, George Otis, and Bailey Willis. Contributions to the Geology of Washington: Geology and Physiography of Central Washington. Department of the Interior, United States Geological Survey, 1903.