APA (7th ed.) Citation

Smith, G. O., & Willis, B. (1903). Contributions to the geology of Washington: Geology and physiography of central Washington. Govt. Print. Off.

Chicago Style (17th ed.) Citation

Smith, George Otis, and Bailey Willis. Contributions to the Geology of Washington: Geology and Physiography of Central Washington. Washington: Govt. Print. Off, 1903.

MLA (9th ed.) Citation

Smith, George Otis, and Bailey Willis. Contributions to the Geology of Washington: Geology and Physiography of Central Washington. Govt. Print. Off, 1903.