Sonchus asper (L.) Hill

Chicago citation style
Sonchus asper (L.) Hill. 20 Jul 1897. Retrieved from the Digital Public Library of America, http://collections.si.edu/search/results.htm?q=record_ID%3Anmnhbotany_13136165&repo=DPLA. (Accessed October 22, 2018.)
APA citation style
(20 Jul 1897) Sonchus asper (L.) Hill. Retrieved from the Digital Public Library of America, http://collections.si.edu/search/results.htm?q=record_ID%3Anmnhbotany_13136165&repo=DPLA
MLA citation style
Retrieved from the Digital Public Library of America <http://collections.si.edu/search/results.htm?q=record_ID%3Anmnhbotany_13136165&repo=DPLA>.
Note: These citations are programmatically generated and may be incomplete.