Cite

Map of Yosemite Valley, Mariposa County, California / U.S. Geological Survey, George Otis Smith, Director ; E.M. Douglas, geographer ; State of California, George C. Pardee, Govenor.

MLA

Geological Survey (U.S.). Map of Yosemite Valley, Mariposa County, California / U.S. Geological Survey, George Otis Smith, Director ; E.M. Douglas, geographer ; State of California, George C. Pardee, Govenor.. BRBL_00615. 1909. https://collections.library.yale.edu/catalog/15821481.

APA, 6th edition

Geological Survey (U.S.). (["BRBL_00615"])(1909)[Map of Yosemite Valley, Mariposa County, California / U.S. Geological Survey, George Otis Smith, Director ; E.M. Douglas, geographer ; State of California, George C. Pardee, Govenor.]. https://collections.library.yale.edu/catalog/15821481.