Real photo postcard of German cavalrymen and officers posed in front of shell crater

Chicago citation style
Real photo postcard of German cavalrymen and officers posed in front of shell crater. 1914-1918. Retrieved from the Digital Public Library of America, http://cdm15138.contentdm.oclc.org/cdm/ref/collection/p15138coll29/id/1630. (Accessed October 19, 2019.)
APA citation style
(1914-1918) Real photo postcard of German cavalrymen and officers posed in front of shell crater. Retrieved from the Digital Public Library of America, http://cdm15138.contentdm.oclc.org/cdm/ref/collection/p15138coll29/id/1630
MLA citation style
Retrieved from the Digital Public Library of America <http://cdm15138.contentdm.oclc.org/cdm/ref/collection/p15138coll29/id/1630>.
Note: These citations are programmatically generated and may be incomplete.