Cite

[Photograph of Cavalryman on horseback]

MLA

[Photograph of Cavalryman on Horseback]. 0AD. https://collections.library.yale.edu/catalog/2017477.

APA, 6th edition

[Photograph of Cavalryman on horseback]. (0 C.E.). [Photographic postcards, Photographic prints, Photographs]. https://collections.library.yale.edu/catalog/2017477.