Omicron Ellipsograph

Chicago citation style
Omicron. Omicron Ellipsograph. ca 1954. Retrieved from the Digital Public Library of America, http://collections.si.edu/search/results.htm?q=record_ID%3Anmah_904482&repo=DPLA. (Accessed November 18, 2018.)
APA citation style
Omicron, (ca 1954) Omicron Ellipsograph. Retrieved from the Digital Public Library of America, http://collections.si.edu/search/results.htm?q=record_ID%3Anmah_904482&repo=DPLA
MLA citation style
Omicron. Retrieved from the Digital Public Library of America <http://collections.si.edu/search/results.htm?q=record_ID%3Anmah_904482&repo=DPLA>.
Note: These citations are programmatically generated and may be incomplete.