Carduus acanthoides

Chicago citation style
Carduus acanthoides. 16 Jul 1906. Retrieved from the Digital Public Library of America, http://collections.si.edu/search/results.htm?q=record_ID%3Anmnhbotany_12972129&repo=DPLA. (Accessed November 18, 2018.)
APA citation style
(16 Jul 1906) Carduus acanthoides. Retrieved from the Digital Public Library of America, http://collections.si.edu/search/results.htm?q=record_ID%3Anmnhbotany_12972129&repo=DPLA
MLA citation style
Retrieved from the Digital Public Library of America <http://collections.si.edu/search/results.htm?q=record_ID%3Anmnhbotany_12972129&repo=DPLA>.
Note: These citations are programmatically generated and may be incomplete.