Xanthium strumarium var. glabratum Mill

Chicago citation style
Xanthium strumarium var. glabratum Mill. 16 Sep 1948. Retrieved from the Digital Public Library of America, http://collections.si.edu/search/results.htm?q=record_ID%3Anmnhbotany_12996741&repo=DPLA. (Accessed October 19, 2018.)
APA citation style
(16 Sep 1948) Xanthium strumarium var. glabratum Mill. Retrieved from the Digital Public Library of America, http://collections.si.edu/search/results.htm?q=record_ID%3Anmnhbotany_12996741&repo=DPLA
MLA citation style
Retrieved from the Digital Public Library of America <http://collections.si.edu/search/results.htm?q=record_ID%3Anmnhbotany_12996741&repo=DPLA>.
Note: These citations are programmatically generated and may be incomplete.