MLA

Hughes, Langston, 1902-1967. Drafts, typescript, carbon. Box 384, folder 6920. n.d.. https://collections.library.yale.edu/catalog/17288864.

APA, 6th edition

Hughes, Langston, 1902-1967. (["Box 384, folder 6920"])(n.d.)[Drafts, typescript, carbon]. https://collections.library.yale.edu/catalog/17288864.