MLA

Hughes, Langston, 1902-1967. Modisane, Bloke. Box 470, folder 11610. 1960. https://collections.library.yale.edu/catalog/2017002.

APA, 6th edition

Hughes, Langston, 1902-1967. (["Box 470, folder 11610"])(1960)[Modisane, Bloke]. https://collections.library.yale.edu/catalog/2017002.