Cite

[Photograph of two men with guitars, one playing to a crowd of people in front of them]

MLA

[Photograph of Two Men with Guitars, One Playing to a Crowd of People in Front of Them]. 0AD. https://collections.library.yale.edu/catalog/2067594.

APA, 6th edition

[Photograph of two men with guitars, one playing to a crowd of people in front of them]. (0 C.E.). [Photographic prints, Photographs]. https://collections.library.yale.edu/catalog/2067594.