MLA

Hughes, Langston, 1902-1967. Walker, Aida; Walker, George. Box 17, folder 215-216. 1875-1978. https://collections.library.yale.edu/catalog/16792498.

APA, 6th edition

Hughes, Langston, 1902-1967. (["Box 17, folder 215-216"])(1875-1978)[Walker, Aida; Walker, George]. https://collections.library.yale.edu/catalog/16792498.