MLA

Hughes, Langston, 1902-1967. Allen, Samuel. Box 5, folder 103-104. 1952-66, n.d.. https://collections.library.yale.edu/catalog/33090479.

APA, 6th edition

Hughes, Langston, 1902-1967. (["Box 5, folder 103-104"])(1952-66, n.d.)[Allen, Samuel]. https://collections.library.yale.edu/catalog/33090479.