[Unidentified man using card catalog in Beinecke Library]
MLA
[Unidentified Man Using Card Catalog in Beinecke Library]. 1963. https://collections.library.yale.edu/catalog/2009983.
APA, 6th edition
[Unidentified man using card catalog in Beinecke Library]. (1963). [Photographic prints, Photographs]. https://collections.library.yale.edu/catalog/2009983.