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.) CitationSmith, George Otis, and Bailey Willis. Contributions to the Geology of Washington: Geology and Physiography of Central Washington. Washington: Govt. print. off., 1903.
MLA (8th ed.) CitationSmith, George Otis, and Bailey Willis. Contributions to the Geology of Washington: Geology and Physiography of Central Washington. Govt. print. off., 1903.
Warning: These citations may not always be 100% accurate.