Cirsium undulatum (Nutt.) Spreng

Chicago citation style
Cirsium undulatum (Nutt.) Spreng. 19 Jun 1925. Retrieved from the Digital Public Library of America, http://collections.si.edu/search/results.htm?q=record_ID%3Anmnhbotany_12978244&repo=DPLA. (Accessed November 21, 2018.)
APA citation style
(19 Jun 1925) Cirsium undulatum (Nutt.) Spreng. Retrieved from the Digital Public Library of America, http://collections.si.edu/search/results.htm?q=record_ID%3Anmnhbotany_12978244&repo=DPLA
MLA citation style
Retrieved from the Digital Public Library of America <http://collections.si.edu/search/results.htm?q=record_ID%3Anmnhbotany_12978244&repo=DPLA>.
Note: These citations are programmatically generated and may be incomplete.