MLA

Asch, Sholem, 1880-1957. Sholem Asch. Box 15, folder 183-184. 1939, n.d.. https://collections.library.yale.edu/catalog/2004399.

APA, 6th edition

Asch, Sholem, 1880-1957. (["Box 15, folder 183-184"])(1939, n.d.)[Sholem Asch]. https://collections.library.yale.edu/catalog/2004399.