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

Chicago citation style
Xanthium strumarium var. canadense (Mill.) Torr. & A. Gray. 6 Sep 1948. Retrieved from the Digital Public Library of America, http://collections.si.edu/search/results.htm?q=record_ID%3Anmnhbotany_12994103&repo=DPLA. (Accessed November 21, 2018.)
APA citation style
(6 Sep 1948) 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_12994103&repo=DPLA
MLA citation style
Retrieved from the Digital Public Library of America <http://collections.si.edu/search/results.htm?q=record_ID%3Anmnhbotany_12994103&repo=DPLA>.
Note: These citations are programmatically generated and may be incomplete.