MLA

Sartre, Jean-Paul, 1905-1980. Interview 13. Box 1, folder 12. 1971 Jun 11. https://collections.library.yale.edu/catalog/16538166.

APA, 6th edition

Sartre, Jean-Paul, 1905-1980. (["Box 1, folder 12"])(1971 Jun 11)[Interview 13]. https://collections.library.yale.edu/catalog/16538166.