Cite

[Photograph of soldiers seated, tent encampment in background]

MLA

[Photograph of Soldiers Seated, Tent Encampment in Background]. 0AD. https://collections.library.yale.edu/catalog/2017467.

APA, 6th edition

[Photograph of soldiers seated, tent encampment in background]. (0 C.E.). [Photographic postcards, Photographic prints, Photographs]. https://collections.library.yale.edu/catalog/2017467.