Guide to rocks and minerals of Illinois

Chicago citation style
Illinois State Geological Survey. Guide to rocks and minerals of Illinois. 1959]. Retrieved from the Digital Public Library of America, http://catalog.hathitrust.org/Record/001662887. (Accessed November 13, 2018.)
APA citation style
Illinois State Geological Survey, (1959]) Guide to rocks and minerals of Illinois. Retrieved from the Digital Public Library of America, http://catalog.hathitrust.org/Record/001662887
MLA citation style
Illinois State Geological Survey. Retrieved from the Digital Public Library of America <http://catalog.hathitrust.org/Record/001662887>.
Note: These citations are programmatically generated and may be incomplete.