Cite

[Photograph of an unidentified man]

MLA

Gant, W. P. [Photograph of an Unidentified Man]. 0AD. https://collections.library.yale.edu/catalog/2010999.

APA, 6th edition

Gant, W. P. (0 C.E.). [Photograph of an unidentified man] [Card photographs, Cartes-de-visite, Photographic prints, Photographs, Studio portraits]. https://collections.library.yale.edu/catalog/2010999.