Cite

(couple in formal attire posed outside)

MLA

Giard, Robert. (Couple in Formal Attire Posed Outside). 0AD. https://collections.library.yale.edu/catalog/2033184.

APA, 6th edition

Giard, R. (0 C.E.). (couple in formal attire posed outside) [Gelatin silver prints, Photographic prints, Photographs]. https://collections.library.yale.edu/catalog/2033184.