Cite

[Photograph of two unidentified buffalo soldiers with musical instruments]

MLA

[Photograph of Two Unidentified Buffalo Soldiers with Musical Instruments]. 0AD. https://collections.library.yale.edu/catalog/2009685.

APA, 6th edition

[Photograph of two unidentified buffalo soldiers with musical instruments]. (0 C.E.). [Cartes-de-visite, Photographic prints, Photographs, Studio portraits]. https://collections.library.yale.edu/catalog/2009685.