MLA

Miłosz, Czesław, 1911-2004. Inheritor, typescript. Box 92, folder 1356. undated. https://collections.library.yale.edu/catalog/10050422.

APA, 6th edition

Miłosz, Czesław, 1911-2004. (["Box 92, folder 1356"])(undated)[Inheritor, typescript]. https://collections.library.yale.edu/catalog/10050422.