MLA

Hughes, Langston, 1902-1967. Cole, Louis. Box 3 (Oversize), folder 34-35. 1929. https://collections.library.yale.edu/catalog/16195669.

APA, 6th edition

Hughes, Langston, 1902-1967. (["Box 3 (Oversize), folder 34-35"])(1929)[Cole, Louis]. https://collections.library.yale.edu/catalog/16195669.