Research materials
MLA
Hughes, Langston, 1902-1967. Research materials. Box 369, folder 5953. 1948, n.d.. https://collections.library.yale.edu/catalog/17034081.
APA, 6th edition
Hughes, Langston, 1902-1967. (["Box 369, folder 5953"])(1948, n.d.)[Research materials]. https://collections.library.yale.edu/catalog/17034081.