Cite

Photographs of Afro-American soldiers [graphic].

MLA

Photographs of Afro-American Soldiers [Graphic]. 0AD. https://collections.library.yale.edu/catalog/2009685.

APA, 6th edition

Photographs of Afro-American soldiers [graphic]. (0 C.E.). [Portraits, Studio portraits, Card photographs (photographs), Photographic prints, Cartes-de-visite, Tintypes (prints)]. https://collections.library.yale.edu/catalog/2009685.