Alabama-Georgia Opelika quadrangle /
MLA
Geological Survey (U.S.). "Alabama-Georgia Opelika quadrangle /." University of Georgia. Map and Government Information Library. 1949, https://dlg.usg.edu/record/dlg_topos_usgs30-opelika-1909-1949#item.
APA
Geological Survey (U.S.) (1949). Alabama-Georgia Opelika quadrangle /. Retrieved from https://dlg.usg.edu/record/dlg_topos_usgs30-opelika-1909-1949#item
Chicago
Geological Survey (U.S.). "Alabama-Georgia Opelika quadrangle /." 1949. June 7, 2026. https://dlg.usg.edu/record/dlg_topos_usgs30-opelika-1909-1949#item.
