MLA

Hughes, Langston, 1902-1967. Cole, Bob. Box 3 (Oversize), folder 33. 1893-1954. https://collections.library.yale.edu/catalog/16195668.

APA, 6th edition

Hughes, Langston, 1902-1967. (["Box 3 (Oversize), folder 33"])(1893-1954)[Cole, Bob]. https://collections.library.yale.edu/catalog/16195668.