The Helt Township (Indiana) meteorite (with nine plates)

Chicago citation style
Perry, Stuart Hoffman. The Helt Township (Indiana) meteorite (with nine plates). 1939. Retrieved from the Digital Public Library of America, http://collections.si.edu/search/results.htm?q=record_ID%3ASILSRO_91699&repo=DPLA. (Accessed November 21, 2018.)
APA citation style
Perry, Stuart Hoffman, (1939) The Helt Township (Indiana) meteorite (with nine plates). Retrieved from the Digital Public Library of America, http://collections.si.edu/search/results.htm?q=record_ID%3ASILSRO_91699&repo=DPLA
MLA citation style
Perry, Stuart Hoffman. Retrieved from the Digital Public Library of America <http://collections.si.edu/search/results.htm?q=record_ID%3ASILSRO_91699&repo=DPLA>.
Note: These citations are programmatically generated and may be incomplete.