MLA

Hughes, Langston, 1902-1967. Draft, typescript, carbon. Box 386, folder 7080. 1957 May 4. https://collections.library.yale.edu/catalog/32341975.

APA, 6th edition

Hughes, Langston, 1902-1967. (["Box 386, folder 7080"])(1957 May 4)[Draft, typescript, carbon]. https://collections.library.yale.edu/catalog/32341975.