MLA

Hughes, Langston, 1902-1967. American Education Fellowship. Box 6, folder 123. 1947. https://collections.library.yale.edu/catalog/32579344.

APA, 6th edition

Hughes, Langston, 1902-1967. (["Box 6, folder 123"])(1947)[American Education Fellowship]. https://collections.library.yale.edu/catalog/32579344.