MLA

Henszey, and Co. [Photograph of an Unidentified Baby]. 0AD. https://collections.library.yale.edu/catalog/2011052.

APA, 6th edition

H., & C. (0 C.E.). [Photograph of an unidentified baby] [Card photographs, Cartes-de-visite, Photographic prints, Photographs, Studio portraits]. https://collections.library.yale.edu/catalog/2011052.