MLA

Steinberg, Saul, 1914-1999. Untitled [Steinberg seated in armchair reading by standing lamp on New York City street map (1974-1993)]. Box 80, folder 1823. circa 1993. https://collections.library.yale.edu/catalog/16856390.

APA, 6th edition

Steinberg, Saul, 1914-1999. (["Box 80, folder 1823"])(circa 1993)[Untitled [Steinberg seated in armchair reading by standing lamp on New York City street map (1974-1993)]]. https://collections.library.yale.edu/catalog/16856390.