Map of the Front Lines of 3rd Division on the Marne, May 31 to July 29

Chicago citation style
Map of the Front Lines of 3rd Division on the Marne, May 31 to July 29. undated. Retrieved from the Digital Public Library of America, http://cdm15138.contentdm.oclc.org/cdm/ref/collection/p15138coll29/id/1553. (Accessed October 21, 2019.)
APA citation style
(undated) Map of the Front Lines of 3rd Division on the Marne, May 31 to July 29. Retrieved from the Digital Public Library of America, http://cdm15138.contentdm.oclc.org/cdm/ref/collection/p15138coll29/id/1553
MLA citation style
Retrieved from the Digital Public Library of America <http://cdm15138.contentdm.oclc.org/cdm/ref/collection/p15138coll29/id/1553>.
Note: These citations are programmatically generated and may be incomplete.