MLA

Hughes, Langston, 1902-1967. Benga, Feral. Box 16, folder 159. 1875-1978. https://collections.library.yale.edu/catalog/16206955.

APA, 6th edition

Hughes, Langston, 1902-1967. (["Box 16, folder 159"])(1875-1978)[Benga, Feral]. https://collections.library.yale.edu/catalog/16206955.