MLA

Hughes, Langston, 1902-1967. Newport Jazz Festival, Inc.. Box 121, folder 2281. 1956-65, n.d.. https://collections.library.yale.edu/catalog/17394769.

APA, 6th edition

Hughes, Langston, 1902-1967. (["Box 121, folder 2281"])(1956-65, n.d.)[Newport Jazz Festival, Inc.]. https://collections.library.yale.edu/catalog/17394769.