MLA

Wilder, Thornton, 1897-1975. Typescript. Box 92, folder 2315. n.d.. https://collections.library.yale.edu/catalog/10628826.

APA, 6th edition

Wilder, Thornton, 1897-1975. (["Box 92, folder 2315"])(n.d.)[Typescript]. https://collections.library.yale.edu/catalog/10628826.