Xanthium strumarium var. canadense (Mill.) Torr. & A. Gray

Chicago citation style
Xanthium strumarium var. canadense (Mill.) Torr. & A. Gray. 15 Oct 1915. Retrieved from the Digital Public Library of America, http://collections.si.edu/search/results.htm?q=record_ID%3Anmnhbotany_12986528&repo=DPLA. (Accessed October 18, 2018.)
APA citation style
(15 Oct 1915) Xanthium strumarium var. canadense (Mill.) Torr. & A. Gray. Retrieved from the Digital Public Library of America, http://collections.si.edu/search/results.htm?q=record_ID%3Anmnhbotany_12986528&repo=DPLA
MLA citation style
Retrieved from the Digital Public Library of America <http://collections.si.edu/search/results.htm?q=record_ID%3Anmnhbotany_12986528&repo=DPLA>.
Note: These citations are programmatically generated and may be incomplete.