MLA

Hughes, Langston, 1902-1967. Ali, Muhammad. Box 5, folder 95. 1964. https://collections.library.yale.edu/catalog/33090415.

APA, 6th edition

Hughes, Langston, 1902-1967. (["Box 5, folder 95"])(1964)[Ali, Muhammad]. https://collections.library.yale.edu/catalog/33090415.