Sixty-pound guns in action

Chicago citation style
United States. Army. Signal Corps. Sixty-pound guns in action. 1918-10-17. Retrieved from the Digital Public Library of America, http://cdm15138.contentdm.oclc.org/cdm/ref/collection/WWI/id/24. (Accessed September 21, 2019.)
APA citation style
United States. Army. Signal Corps, (1918-10-17) Sixty-pound guns in action. Retrieved from the Digital Public Library of America, http://cdm15138.contentdm.oclc.org/cdm/ref/collection/WWI/id/24
MLA citation style
United States. Army. Signal Corps. Retrieved from the Digital Public Library of America <http://cdm15138.contentdm.oclc.org/cdm/ref/collection/WWI/id/24>.
Note: These citations are programmatically generated and may be incomplete.