Middle and Upper Devonian, text

Chicago citation style
Maryland Geological Survey. Middle and Upper Devonian, text. 1913. Retrieved from the Digital Public Library of America, http://catalog.hathitrust.org/Record/001661597. (Accessed November 12, 2018.)
APA citation style
Maryland Geological Survey, (1913) Middle and Upper Devonian, text. Retrieved from the Digital Public Library of America, http://catalog.hathitrust.org/Record/001661597
MLA citation style
Maryland Geological Survey. Retrieved from the Digital Public Library of America <http://catalog.hathitrust.org/Record/001661597>.
Note: These citations are programmatically generated and may be incomplete.