MLA

Hughes, Langston, 1902-1967. Hammond, Arthur. Box 5 (Oversize), folder 60. 1893-1954. https://collections.library.yale.edu/catalog/16198508.

APA, 6th edition

Hughes, Langston, 1902-1967. (["Box 5 (Oversize), folder 60"])(1893-1954)[Hammond, Arthur]. https://collections.library.yale.edu/catalog/16198508.