MLA

Stein, Gertrude, 1874-1946. Typescript, corrected. Box 78, folder 1423. n.d.. https://collections.library.yale.edu/catalog/2064373.

APA, 6th edition

Stein, Gertrude, 1874-1946. (["Box 78, folder 1423"])(n.d.)[Typescript, corrected]. https://collections.library.yale.edu/catalog/2064373.