MLA

Geological Survey (U.S.). Areal geology, Montana, Livingston sheet / U.S. Geological Survey, J.W. Powell, Director ; Henry Gannett, Chief Topographer ; A.H. Thompson, Geographer in charge ; triangulation by E.M. Douglas and J.H. Renshawe ; topography by Northern Transcontinental S. BRBL_00581. [1893]. https://collections.library.yale.edu/catalog/15818309.

APA, 6th edition

Geological Survey (U.S.). (["BRBL_00581"])([1893])[Areal geology, Montana, Livingston sheet / U.S. Geological Survey, J.W. Powell, Director ; Henry Gannett, Chief Topographer ; A.H. Thompson, Geographer in charge ; triangulation by E.M. Douglas and J.H. Renshawe ; topography by Northern Transcontinental S]. https://collections.library.yale.edu/catalog/15818309.