MLA

Hughes, Langston, 1902-1967. Omega Achievement Award. Box 461, folder 11188. 1950 Nov 12. https://collections.library.yale.edu/catalog/17034166.

APA, 6th edition

Hughes, Langston, 1902-1967. (["Box 461, folder 11188"])(1950 Nov 12)[Omega Achievement Award]. https://collections.library.yale.edu/catalog/17034166.