MLA

Mondrian, Piet, 1872-1944. Social Security Card, United States. Box 4, folder 104. circa 1941. https://collections.library.yale.edu/catalog/16626973.

APA, 6th edition

Mondrian, Piet, 1872-1944. (["Box 4, folder 104"])(circa 1941)[Social Security Card, United States]. https://collections.library.yale.edu/catalog/16626973.