Amsden, T. W., & Amsden, T. W. (1975). Insoluble-residue maps of Late Ordovician and Silurian Strata and structure and isopach map of Hounton Strata in Central and Western Oklahoma: Pre-Denovian subcrop maps. Oklahoma: Oklahoma Geological Survey.
Chicago Style CitationAmsden, Thomas William, and Thomas William Amsden. Insoluble-residue Maps of Late Ordovician and Silurian Strata and Structure and Isopach Map of Hounton Strata in Central and Western Oklahoma: Pre-Denovian Subcrop Maps. Oklahoma: Oklahoma Geological Survey, 1975.
MLA CitationAmsden, Thomas William, and Thomas William Amsden. Insoluble-residue Maps of Late Ordovician and Silurian Strata and Structure and Isopach Map of Hounton Strata in Central and Western Oklahoma: Pre-Denovian Subcrop Maps. Oklahoma: Oklahoma Geological Survey, 1975.