MLA

Hughes, Langston, 1902-1967. "Negro Amateur Theatres Have Developed Talent" [1953 May 9], draft, carbon, and printed version. Box 411, folder 8685. 1953, n.d.. https://collections.library.yale.edu/catalog/17034118.

APA, 6th edition

Hughes, Langston, 1902-1967. (["Box 411, folder 8685"])(1953, n.d.)["Negro Amateur Theatres Have Developed Talent" [1953 May 9], draft, carbon, and printed version]. https://collections.library.yale.edu/catalog/17034118.