MLA

Hughes, Langston, 1902-1967. Newport Jazz Festival: notes. Box 482, folder 12184. 1960, n.d.. https://collections.library.yale.edu/catalog/17394803.

APA, 6th edition

Hughes, Langston, 1902-1967. (["Box 482, folder 12184"])(1960, n.d.)[Newport Jazz Festival: notes]. https://collections.library.yale.edu/catalog/17394803.