The North American dragonflies (Odonata) of the genus Macromia

Chicago citation style
Williamson, Edward Bruce. The North American dragonflies (Odonata) of the genus Macromia. 1909. Retrieved from the Digital Public Library of America, http://collections.si.edu/search/results.htm?q=record_ID%3ASILSRO_85633&repo=DPLA. (Accessed November 15, 2018.)
APA citation style
Williamson, Edward Bruce, (1909) The North American dragonflies (Odonata) of the genus Macromia. Retrieved from the Digital Public Library of America, http://collections.si.edu/search/results.htm?q=record_ID%3ASILSRO_85633&repo=DPLA
MLA citation style
Williamson, Edward Bruce. Retrieved from the Digital Public Library of America <http://collections.si.edu/search/results.htm?q=record_ID%3ASILSRO_85633&repo=DPLA>.
Note: These citations are programmatically generated and may be incomplete.