MLA

Hughes, Langston, 1902-1967. Coussey, Anne Marie. Box 3 (Oversize), folder 39. 1924. https://collections.library.yale.edu/catalog/16195673.

APA, 6th edition

Hughes, Langston, 1902-1967. (["Box 3 (Oversize), folder 39"])(1924)[Coussey, Anne Marie]. https://collections.library.yale.edu/catalog/16195673.