Helodrilus caliginosus trapezoides (Duges)

Chicago citation style
Helodrilus caliginosus trapezoides (Duges). 1890. Retrieved from the Digital Public Library of America, http://collections.si.edu/search/results.htm?q=record_ID%3Anmnhinvertebratezoology_718272&repo=DPLA. (Accessed November 19, 2018.)
APA citation style
(1890) Helodrilus caliginosus trapezoides (Duges). Retrieved from the Digital Public Library of America, http://collections.si.edu/search/results.htm?q=record_ID%3Anmnhinvertebratezoology_718272&repo=DPLA
MLA citation style
Retrieved from the Digital Public Library of America <http://collections.si.edu/search/results.htm?q=record_ID%3Anmnhinvertebratezoology_718272&repo=DPLA>.
Note: These citations are programmatically generated and may be incomplete.