MLA

Steinberg, Saul, 1914-1999. Untitled [Two men facing each other holding balls, one figure expressed in pointillism]. Box 419, folder 5638. circa 1965-1967. https://collections.library.yale.edu/catalog/12154336.

APA, 6th edition

Steinberg, Saul, 1914-1999. (["Box 419, folder 5638"])(circa 1965-1967)[Untitled [Two men facing each other holding balls, one figure expressed in pointillism]]. https://collections.library.yale.edu/catalog/12154336.