MLA

Miłosz, Czesław, 1911-2004. In France. Box 183, folder 2857. 1980. https://collections.library.yale.edu/catalog/10050420.

APA, 6th edition

Miłosz, Czesław, 1911-2004. (["Box 183, folder 2857"])(1980)[In France]. https://collections.library.yale.edu/catalog/10050420.