Cite

[Photograph of one unidentified buffalo soldier with rifle and knife]

MLA

[Photograph of One Unidentified Buffalo Soldier with Rifle and Knife]. 0AD. https://collections.library.yale.edu/catalog/2009690.

APA, 6th edition

[Photograph of one unidentified buffalo soldier with rifle and knife]. (0 C.E.). [Cartes-de-visite, Photographic prints, Photographs, Studio portraits]. https://collections.library.yale.edu/catalog/2009690.