"The Best Policy": holograph manuscript, corrected
MLA
Wharton, Edith, 1862-1937. "The Best Policy": holograph manuscript, corrected. Box 15, folder 428-29. n.d.. https://collections.library.yale.edu/catalog/32181380.
APA, 6th edition
Wharton, Edith, 1862-1937. (["Box 15, folder 428-29"])(n.d.)["The Best Policy": holograph manuscript, corrected]. https://collections.library.yale.edu/catalog/32181380.