MLA

Hughes, Langston, 1902-1967. Bailey, Pearl. Box 1 (Oversize), folder 7. 1893-1954. https://collections.library.yale.edu/catalog/16195298.

APA, 6th edition

Hughes, Langston, 1902-1967. (["Box 1 (Oversize), folder 7"])(1893-1954)[Bailey, Pearl]. https://collections.library.yale.edu/catalog/16195298.