MLA

Hughes, Langston, 1902-1967. American Russian Institute. Box 6, folder 137. 1944. https://collections.library.yale.edu/catalog/32579716.

APA, 6th edition

Hughes, Langston, 1902-1967. (["Box 6, folder 137"])(1944)[American Russian Institute]. https://collections.library.yale.edu/catalog/32579716.