MLA

Steinberg, Saul, 1914-1999. Untitled [Woman holding cup]. Box 78, folder 1613. undated. https://collections.library.yale.edu/catalog/32457552.

APA, 6th edition

Steinberg, Saul, 1914-1999. (["Box 78, folder 1613"])(undated)[Untitled [Woman holding cup]]. https://collections.library.yale.edu/catalog/32457552.