Cita APA

Amsden, T. W., & Amsden, T. W. (1980). Isopach map of Sylvan Shale in eastern Oklahoma: Structure map of Sylvan Shale in eastern Oklahoma. Oklahoma: Oklahoma Geological Survey.

Citación estilo Chicago

Amsden, Thomas William, y Thomas William Amsden. Isopach Map of Sylvan Shale in Eastern Oklahoma: Structure Map of Sylvan Shale in Eastern Oklahoma. Oklahoma: Oklahoma Geological Survey, 1980.

Cita MLA

Amsden, Thomas William, y Thomas William Amsden. Isopach Map of Sylvan Shale in Eastern Oklahoma: Structure Map of Sylvan Shale in Eastern Oklahoma. Oklahoma: Oklahoma Geological Survey, 1980.