MLA

Hughes, Langston, 1902-1967. Newport Jazz Festival. Box 462, folder 11233. 1960. https://collections.library.yale.edu/catalog/17394794.

APA, 6th edition

Hughes, Langston, 1902-1967. (["Box 462, folder 11233"])(1960)[Newport Jazz Festival]. https://collections.library.yale.edu/catalog/17394794.