MLA

Hughes, Langston, 1902-1967. Drafts, typescript and carbon. Box 379, folder 6573. n.d.. https://collections.library.yale.edu/catalog/17288862.

APA, 6th edition

Hughes, Langston, 1902-1967. (["Box 379, folder 6573"])(n.d.)[Drafts, typescript and carbon]. https://collections.library.yale.edu/catalog/17288862.