Cite

Untitled [Man in military hat and uniform with "4" on shoulder]

MLA

Steinberg, Saul, 1914-1999. Untitled [Man in military hat and uniform with "4" on shoulder]. Box 76, folder 1510. circa 1980. https://collections.library.yale.edu/catalog/16856008.

APA, 6th edition

Steinberg, Saul, 1914-1999. (["Box 76, folder 1510"])(circa 1980)[Untitled [Man in military hat and uniform with "4" on shoulder]]. https://collections.library.yale.edu/catalog/16856008.