MLA

Hughes, Langston, 1902-1967. A - general. Box 1. circa 1920-1993. https://collections.library.yale.edu/catalog/2046891.

APA, 6th edition

Hughes, Langston, 1902-1967. (["Box 1"])(circa 1920-1993)[A - general]. https://collections.library.yale.edu/catalog/2046891.