MLA

Hughes, Langston, 1902-1967. Hernandez, Juano. Box 88. circa 1920-1993. https://collections.library.yale.edu/catalog/17028497.

APA, 6th edition

Hughes, Langston, 1902-1967. (["Box 88"])(circa 1920-1993)[Hernandez, Juano]. https://collections.library.yale.edu/catalog/17028497.