- Chicago citation style
- Augusta longifolia var. longifolia. 23 Oct 1980. Retrieved from the Digital Public Library of America, http://collections.si.edu/search/results.htm?q=record_ID%3Anmnhbotany_13707468&repo=DPLA. (Accessed December 9, 2019.)
- APA citation style
- (23 Oct 1980) Augusta longifolia var. longifolia. Retrieved from the Digital Public Library of America, http://collections.si.edu/search/results.htm?q=record_ID%3Anmnhbotany_13707468&repo=DPLA
- MLA citation style
- Retrieved from the Digital Public Library of America <http://collections.si.edu/search/results.htm?q=record_ID%3Anmnhbotany_13707468&repo=DPLA>.