MLA

Steinberg, Saul, 1914-1999. Untitled [Woman]. Box 78, folder 1578. undated. https://collections.library.yale.edu/catalog/32457241.

APA, 6th edition

Steinberg, Saul, 1914-1999. (["Box 78, folder 1578"])(undated)[Untitled [Woman]]. https://collections.library.yale.edu/catalog/32457241.