MLA

Hughes, Langston, 1902-1967. Davis, Frank Marshall. Box 52, folder 970. 1941-56. https://collections.library.yale.edu/catalog/31915582.

APA, 6th edition

Hughes, Langston, 1902-1967. (["Box 52, folder 970"])(1941-56)[Davis, Frank Marshall]. https://collections.library.yale.edu/catalog/31915582.