MLA

Hughes, Langston, 1902-1967. Draft, typescript, corrected. Box 378, folder 6440. n.d.. https://collections.library.yale.edu/catalog/16536582.

APA, 6th edition

Hughes, Langston, 1902-1967. (["Box 378, folder 6440"])(n.d.)[Draft, typescript, corrected]. https://collections.library.yale.edu/catalog/16536582.