"Dirigold"

Chicago citation style
"Dirigold". introduced 1926. Retrieved from the Digital Public Library of America, http://collections.si.edu/search/results.htm?q=record_ID%3Achndm_1999-11-7&repo=DPLA. (Accessed September 20, 2018.)
APA citation style
(introduced 1926) "Dirigold". Retrieved from the Digital Public Library of America, http://collections.si.edu/search/results.htm?q=record_ID%3Achndm_1999-11-7&repo=DPLA
MLA citation style
Retrieved from the Digital Public Library of America <http://collections.si.edu/search/results.htm?q=record_ID%3Achndm_1999-11-7&repo=DPLA>.
Note: These citations are programmatically generated and may be incomplete.