Annual reports of the progress of the Geological and Mineralogical Survey of the State of Delaware

Chicago citation style
Geological Survey of the State of Delaware. Annual reports of the progress of the Geological and Mineralogical Survey of the State of Delaware. 1839. Retrieved from the Digital Public Library of America, http://catalog.hathitrust.org/Record/006223444. (Accessed November 16, 2018.)
APA citation style
Geological Survey of the State of Delaware, (1839) Annual reports of the progress of the Geological and Mineralogical Survey of the State of Delaware. Retrieved from the Digital Public Library of America, http://catalog.hathitrust.org/Record/006223444
MLA citation style
Geological Survey of the State of Delaware. Retrieved from the Digital Public Library of America <http://catalog.hathitrust.org/Record/006223444>.
Note: These citations are programmatically generated and may be incomplete.