MLA

Kravitt, Samuel. Cushing/Whitney Medical Library Medical Historical Library, 1941. Samuel Kravitt Photography, 1941. https://collections.library.yale.edu/catalog/16787473.

APA, 6th edition

Kravitt, S. (1941). Cushing/Whitney Medical Library Medical Historical Library, 1941 [Photograph]. Samuel Kravitt Photography. https://collections.library.yale.edu/catalog/16787473.