Leadville mining district [cartographic material] / U.S. Geological Survey ; R.B. Marshall, chief geographer ; Sledge Tatum, geographer in charge ; topography by E.P. Davis and S.E. Taylor ; control by R.B. Robertson, C.H. Semper, and S.E. Taylor.
MLA
Geological Survey (U.S.). Leadville mining district [cartographic material] / U.S. Geological Survey ; R.B. Marshall, chief geographer ; Sledge Tatum, geographer in charge ; topography by E.P. Davis and S.E. Taylor ; control by R.B. Robertson, C.H. Semper, and S.E. Taylor.. 1913. https://collections.library.yale.edu/catalog/16729374.
APA, 6th edition
Geological Survey (U.S.). (1913)[Leadville mining district [cartographic material] / U.S. Geological Survey ; R.B. Marshall, chief geographer ; Sledge Tatum, geographer in charge ; topography by E.P. Davis and S.E. Taylor ; control by R.B. Robertson, C.H. Semper, and S.E. Taylor.]. https://collections.library.yale.edu/catalog/16729374.
