MLA

Wharton, Edith, 1862-1937. La Valle di Decisione, (Italian translation, incomplete). Box 14, folder 409-14. 1932. https://collections.library.yale.edu/catalog/17111102.

APA, 6th edition

Wharton, Edith, 1862-1937. (["Box 14, folder 409-14"])(1932)[La Valle di Decisione, (Italian translation, incomplete)]. https://collections.library.yale.edu/catalog/17111102.