Helenium microcephalum DC

Chicago citation style
Helenium microcephalum DC. 13 May 1937. Retrieved from the Digital Public Library of America, http://collections.si.edu/search/results.htm?q=record_ID%3Anmnhbotany_12952439&repo=DPLA. (Accessed October 20, 2018.)
APA citation style
(13 May 1937) Helenium microcephalum DC. Retrieved from the Digital Public Library of America, http://collections.si.edu/search/results.htm?q=record_ID%3Anmnhbotany_12952439&repo=DPLA
MLA citation style
Retrieved from the Digital Public Library of America <http://collections.si.edu/search/results.htm?q=record_ID%3Anmnhbotany_12952439&repo=DPLA>.
Note: These citations are programmatically generated and may be incomplete.