APA

Department of Energy and Natural Resources. Geological Survey, . (1934). Report of Investigations. Urbana: Geological Survey.

Chicago

Department of Energy and Natural Resources. Geological Survey, . 1934. Report of Investigations. Urbana: Geological Survey.

Harvard

Department of Energy and Natural Resources. Geological Survey, . (1934). Report of Investigations. Urbana: Geological Survey.

MLA

Department of Energy and Natural Resources. Geological Survey, . Report of Investigations. Urbana: Geological Survey. 1934.