Cite

[Photograph of several people on a set of stairs]

MLA

[Photograph of Several People on a Set of Stairs]. 0AD. https://collections.library.yale.edu/catalog/2067602.

APA, 6th edition

[Photograph of several people on a set of stairs]. (0 C.E.). [Photographic prints, Photographs]. https://collections.library.yale.edu/catalog/2067602.