National Guardsman looking through sights camera mounted on machine gun

Chicago citation style
National Guardsman looking through sights camera mounted on machine gun. 1929-08. Retrieved from the Digital Public Library of America, http://digital.library.temple.edu/cdm/ref/collection/p15037coll3/id/17177. (Accessed December 14, 2018.)
APA citation style
(1929-08) National Guardsman looking through sights camera mounted on machine gun. Retrieved from the Digital Public Library of America, http://digital.library.temple.edu/cdm/ref/collection/p15037coll3/id/17177
MLA citation style
Retrieved from the Digital Public Library of America <http://digital.library.temple.edu/cdm/ref/collection/p15037coll3/id/17177>.
Note: These citations are programmatically generated and may be incomplete.