MLA

Hughes, Langston, 1902-1967. Berlin: notes. Box 484, folder 12253. 1964. https://collections.library.yale.edu/catalog/2110180.

APA, 6th edition

Hughes, Langston, 1902-1967. (["Box 484, folder 12253"])(1964)[Berlin: notes]. https://collections.library.yale.edu/catalog/2110180.