MLA

Hughes, Langston, 1902-1967. Thomas, Edna. Box 11 (Oversize), folder 128. 1893-1954. https://collections.library.yale.edu/catalog/16206928.

APA, 6th edition

Hughes, Langston, 1902-1967. (["Box 11 (Oversize), folder 128"])(1893-1954)[Thomas, Edna]. https://collections.library.yale.edu/catalog/16206928.