MLA

Wharton, Edith, 1862-1937. Holograph manuscript, corrected. Box 8, folder 206-12. n.d.. https://collections.library.yale.edu/catalog/16743304.

APA, 6th edition

Wharton, Edith, 1862-1937. (["Box 8, folder 206-12"])(n.d.)[Holograph manuscript, corrected]. https://collections.library.yale.edu/catalog/16743304.