MLA

Miłosz, Czesław, 1911-2004. Child of Europe, typescript, corrected. Box 92, folder 1335. undated. https://collections.library.yale.edu/catalog/10050438.

APA, 6th edition

Miłosz, Czesław, 1911-2004. (["Box 92, folder 1335"])(undated)[Child of Europe, typescript, corrected]. https://collections.library.yale.edu/catalog/10050438.