Poland

Chicago citation style
Arctowski, Henryk, 1871-1958. Poland. 1920. Retrieved from the Digital Public Library of America, http://ark.digitalcommonwealth.org/ark:/50959/x633fb66g. (Accessed June 23, 2018.)
APA citation style
Arctowski, Henryk, 1871-1958, (1920) Poland. Retrieved from the Digital Public Library of America, http://ark.digitalcommonwealth.org/ark:/50959/x633fb66g
MLA citation style
Arctowski, Henryk, 1871-1958. Retrieved from the Digital Public Library of America <http://ark.digitalcommonwealth.org/ark:/50959/x633fb66g>.
Note: These citations are programmatically generated and may be incomplete.