MLA

Hughes, Langston, 1902-1967. Navarro, Ramon. Box 119, folder 2254. 1933 Sep 18. https://collections.library.yale.edu/catalog/32417845.

APA, 6th edition

Hughes, Langston, 1902-1967. (["Box 119, folder 2254"])(1933 Sep 18)[Navarro, Ramon]. https://collections.library.yale.edu/catalog/32417845.